diff --git a/daw-backend/src/lib.rs b/daw-backend/src/lib.rs
index 5d09468..a17fbeb 100644
--- a/daw-backend/src/lib.rs
+++ b/daw-backend/src/lib.rs
@@ -37,6 +37,8 @@ pub struct AudioSystem {
     pub stream: cpal::Stream,
     pub sample_rate: u32,
     pub channels: u32,
+    /// Event receiver for polling audio events (only present when no EventEmitter is provided)
+    pub event_rx: Option<rtrb::Consumer<AudioEvent>>,
 }
 
 impl AudioSystem {
@@ -152,6 +154,7 @@ impl AudioSystem {
                     stream: output_stream,
                     sample_rate,
                     channels,
+                    event_rx: None, // No event receiver when audio device unavailable
                 });
             }
         };
@@ -179,6 +182,7 @@ impl AudioSystem {
                     stream: output_stream,
                     sample_rate,
                     channels,
+                    event_rx: None, // No event receiver when audio device unavailable
                 });
             }
         };
@@ -205,16 +209,20 @@ impl AudioSystem {
         // Leak the input stream to keep it alive
         Box::leak(Box::new(input_stream));
 
-        // Spawn emitter thread if provided
-        if let Some(emitter) = event_emitter {
+        // Spawn emitter thread if provided, or store event_rx for manual polling
+        let event_rx_option = if let Some(emitter) = event_emitter {
             Self::spawn_emitter_thread(event_rx, emitter);
-        }
+            None
+        } else {
+            Some(event_rx)
+        };
 
         Ok(Self {
             controller,
             stream: output_stream,
             sample_rate,
             channels,
+            event_rx: event_rx_option,
         })
     }
 
diff --git a/lightningbeam-ui/Cargo.lock b/lightningbeam-ui/Cargo.lock
index 6e2d885..04cf011 100644
--- a/lightningbeam-ui/Cargo.lock
+++ b/lightningbeam-ui/Cargo.lock
@@ -138,6 +138,15 @@ dependencies = [
  "zerocopy",
 ]
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "aligned-vec"
 version = "0.6.4"
@@ -147,6 +156,46 @@ dependencies = [
  "equator",
 ]
 
+[[package]]
+name = "allocator-api2"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
+
+[[package]]
+name = "alsa"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2562ad8dcf0f789f65c6fdaad8a8a9708ed6b488e649da28c01656ad66b8b47"
+dependencies = [
+ "alsa-sys",
+ "bitflags 1.3.2",
+ "libc",
+ "nix 0.24.3",
+]
+
+[[package]]
+name = "alsa"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed7572b7ba83a31e20d1b48970ee402d2e3e0537dcfe0a3ff4d6eb7508617d43"
+dependencies = [
+ "alsa-sys",
+ "bitflags 2.10.0",
+ "cfg-if",
+ "libc",
+]
+
+[[package]]
+name = "alsa-sys"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db8fee663d06c4e303404ef5f40488a53e062f89ba8bfed81f42325aafad1527"
+dependencies = [
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "android-activity"
 version = "0.6.0"
@@ -161,7 +210,7 @@ dependencies = [
  "jni-sys",
  "libc",
  "log",
- "ndk",
+ "ndk 0.9.0",
  "ndk-context",
  "ndk-sys 0.6.0+11769913",
  "num_enum",
@@ -537,7 +586,7 @@ dependencies = [
  "anyhow",
  "arrayvec",
  "log",
- "nom",
+ "nom 8.0.0",
  "num-rational",
  "v_frame",
 ]
@@ -572,6 +621,24 @@ dependencies = [
  "simd-abstraction",
 ]
 
+[[package]]
+name = "bindgen"
+version = "0.72.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "993776b509cfb49c750f11b8f07a46fa23e0a1386ffc01fb1e7d343efc387895"
+dependencies = [
+ "bitflags 2.10.0",
+ "cexpr",
+ "clang-sys",
+ "itertools 0.12.1",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash 2.1.1",
+ "shlex",
+ "syn 2.0.110",
+]
+
 [[package]]
 name = "bit-set"
 version = "0.6.0"
@@ -805,6 +872,21 @@ dependencies = [
  "wayland-client",
 ]
 
+[[package]]
+name = "cassowary"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df8670b8c7b9dae1793364eafadf7239c40d669904660c5960d74cfd80b46a53"
+
+[[package]]
+name = "castaway"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dec551ab6e7578819132c713a93c022a05d60159dc86e7a7050223577484c55a"
+dependencies = [
+ "rustversion",
+]
+
 [[package]]
 name = "cc"
 version = "1.2.45"
@@ -823,6 +905,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6d43a04d8753f35258c91f8ec639f792891f748a1edbd759cf1dcea3382ad83c"
 
+[[package]]
+name = "cexpr"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
+dependencies = [
+ "nom 7.1.3",
+]
+
 [[package]]
 name = "cfg-expr"
 version = "0.15.8"
@@ -860,6 +951,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "clang-sys"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b023947811758c97c59bf9d1c188fd619ad4718dcaa767947df1cadb14f39f4"
+dependencies = [
+ "glob",
+ "libc",
+ "libloading",
+]
+
 [[package]]
 name = "clap"
 version = "4.5.51"
@@ -978,6 +1080,19 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "compact_str"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f86b9c4c00838774a6d902ef931eff7470720c51d90c2e32cfe15dc304737b3f"
+dependencies = [
+ "castaway",
+ "cfg-if",
+ "itoa",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "concurrent-queue"
 version = "2.5.0"
@@ -1066,6 +1181,69 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "coreaudio-rs"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "321077172d79c662f64f5071a03120748d5bb652f5231570141be24cfcd2bace"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation-sys",
+ "coreaudio-sys",
+]
+
+[[package]]
+name = "coreaudio-sys"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ceec7a6067e62d6f931a2baf6f3a751f4a892595bcec1461a3c94ef9949864b6"
+dependencies = [
+ "bindgen",
+]
+
+[[package]]
+name = "coremidi"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a7847ca018a67204508b77cb9e6de670125075f7464fff5f673023378fa34f5"
+dependencies = [
+ "core-foundation 0.9.4",
+ "core-foundation-sys",
+ "coremidi-sys",
+]
+
+[[package]]
+name = "coremidi-sys"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc9504310988d938e49fff1b5f1e56e3dafe39bb1bae580c19660b58b83a191e"
+dependencies = [
+ "core-foundation-sys",
+]
+
+[[package]]
+name = "cpal"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "873dab07c8f743075e57f524c583985fbaf745602acbe916a01539364369a779"
+dependencies = [
+ "alsa 0.9.1",
+ "core-foundation-sys",
+ "coreaudio-rs",
+ "dasp_sample",
+ "jni",
+ "js-sys",
+ "libc",
+ "mach2",
+ "ndk 0.8.0",
+ "ndk-context",
+ "oboe",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "windows 0.54.0",
+]
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.17"
@@ -1118,6 +1296,31 @@ version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
 
+[[package]]
+name = "crossterm"
+version = "0.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f476fe445d41c9e991fd07515a6f463074b782242ccf4a5b7b1d1012e70824df"
+dependencies = [
+ "bitflags 2.10.0",
+ "crossterm_winapi",
+ "libc",
+ "mio",
+ "parking_lot",
+ "signal-hook",
+ "signal-hook-mio",
+ "winapi",
+]
+
+[[package]]
+name = "crossterm_winapi"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acdd7c62a3665c7f6830a51635d9ac9b23ed385797f70a83bb8bafe9c572ab2b"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "crunchy"
 version = "0.2.4"
@@ -1196,6 +1399,120 @@ dependencies = [
  "parking_lot_core",
 ]
 
+[[package]]
+name = "dasp_envelope"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ec617ce7016f101a87fe85ed44180839744265fae73bb4aa43e7ece1b7668b6"
+dependencies = [
+ "dasp_frame",
+ "dasp_peak",
+ "dasp_ring_buffer",
+ "dasp_rms",
+ "dasp_sample",
+]
+
+[[package]]
+name = "dasp_frame"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2a3937f5fe2135702897535c8d4a5553f8b116f76c1529088797f2eee7c5cd6"
+dependencies = [
+ "dasp_sample",
+]
+
+[[package]]
+name = "dasp_graph"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39b17b071a1fa4c78054730085620c3bb22dc5fded00483312557a3fdf26d7c4"
+dependencies = [
+ "dasp_frame",
+ "dasp_ring_buffer",
+ "dasp_signal",
+ "dasp_slice",
+ "petgraph 0.5.1",
+]
+
+[[package]]
+name = "dasp_interpolate"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fc975a6563bb7ca7ec0a6c784ead49983a21c24835b0bc96eea11ee407c7486"
+dependencies = [
+ "dasp_frame",
+ "dasp_ring_buffer",
+ "dasp_sample",
+]
+
+[[package]]
+name = "dasp_peak"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cf88559d79c21f3d8523d91250c397f9a15b5fc72fbb3f87fdb0a37b79915bf"
+dependencies = [
+ "dasp_frame",
+ "dasp_sample",
+]
+
+[[package]]
+name = "dasp_ring_buffer"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07d79e19b89618a543c4adec9c5a347fe378a19041699b3278e616e387511ea1"
+
+[[package]]
+name = "dasp_rms"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6c5dcb30b7e5014486e2822537ea2beae50b19722ffe2ed7549ab03774575aa"
+dependencies = [
+ "dasp_frame",
+ "dasp_ring_buffer",
+ "dasp_sample",
+]
+
+[[package]]
+name = "dasp_sample"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c87e182de0887fd5361989c677c4e8f5000cd9491d6d563161a8f3a5519fc7f"
+
+[[package]]
+name = "dasp_signal"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa1ab7d01689c6ed4eae3d38fe1cea08cba761573fbd2d592528d55b421077e7"
+dependencies = [
+ "dasp_envelope",
+ "dasp_frame",
+ "dasp_interpolate",
+ "dasp_peak",
+ "dasp_ring_buffer",
+ "dasp_rms",
+ "dasp_sample",
+ "dasp_window",
+]
+
+[[package]]
+name = "dasp_slice"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e1c7335d58e7baedafa516cb361360ff38d6f4d3f9d9d5ee2a2fc8e27178fa1"
+dependencies = [
+ "dasp_frame",
+ "dasp_sample",
+]
+
+[[package]]
+name = "dasp_window"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99ded7b88821d2ce4e8b842c9f1c86ac911891ab89443cc1de750cae764c5076"
+dependencies = [
+ "dasp_sample",
+]
+
 [[package]]
 name = "data-encoding"
 version = "2.9.0"
@@ -1217,6 +1534,33 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "be1e0bca6c3637f992fc1cc7cbc52a78c1ef6db076dbf1059c4323d6a2048376"
 
+[[package]]
+name = "daw-backend"
+version = "0.1.0"
+dependencies = [
+ "base64 0.22.1",
+ "cpal",
+ "crossterm",
+ "dasp_envelope",
+ "dasp_graph",
+ "dasp_interpolate",
+ "dasp_peak",
+ "dasp_ring_buffer",
+ "dasp_rms",
+ "dasp_sample",
+ "dasp_signal",
+ "midir",
+ "midly",
+ "pathdiff",
+ "petgraph 0.6.5",
+ "rand",
+ "ratatui",
+ "rtrb",
+ "serde",
+ "serde_json",
+ "symphonia",
+]
+
 [[package]]
 name = "digest"
 version = "0.10.7"
@@ -1444,6 +1788,15 @@ dependencies = [
  "bytemuck",
 ]
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75030f3c4f45dafd7586dd6780965a8c7e8e285a5ecb86713e63a79c5b2766f3"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "endi"
 version = "1.1.0"
@@ -1602,6 +1955,12 @@ dependencies = [
  "zune-inflate",
 ]
 
+[[package]]
+name = "extended"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af9673d8203fcb076b19dfd17e38b3d4ae9f44959416ea532ce72415a6020365"
+
 [[package]]
 name = "fastrand"
 version = "2.3.0"
@@ -1653,6 +2012,18 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "52051878f80a721bb68ebfbc930e07b65ba72f2da88968ea5c06fd6ca3d3a127"
 
+[[package]]
+name = "fixedbitset"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37ab347416e802de484e4d03c7316c48f1ecb56574dfd4a46a80f173ce1de04d"
+
+[[package]]
+name = "fixedbitset"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
+
 [[package]]
 name = "flate2"
 version = "1.1.5"
@@ -2046,6 +2417,12 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "glob"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
+
 [[package]]
 name = "glow"
 version = "0.13.1"
@@ -2293,6 +2670,8 @@ version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
+ "allocator-api2",
+ "equivalent",
  "foldhash",
 ]
 
@@ -2504,6 +2883,16 @@ dependencies = [
  "arrayvec",
 ]
 
+[[package]]
+name = "indexmap"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+dependencies = [
+ "autocfg",
+ "hashbrown 0.12.3",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.12.0"
@@ -2551,6 +2940,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.15"
@@ -2750,6 +3148,7 @@ name = "lightningbeam-editor"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "daw-backend",
  "eframe",
  "egui-wgpu",
  "egui_extras",
@@ -2761,6 +3160,7 @@ dependencies = [
  "peniko 0.5.0",
  "pollster",
  "resvg 0.42.0",
+ "rtrb",
  "serde",
  "serde_json",
  "uuid",
@@ -2783,7 +3183,7 @@ dependencies = [
  "dashmap",
  "data-encoding",
  "getrandom 0.3.4",
- "indexmap",
+ "indexmap 2.12.0",
  "itertools 0.10.5",
  "lazy_static",
  "lightningcss-derive",
@@ -2863,6 +3263,24 @@ dependencies = [
  "imgref",
 ]
 
+[[package]]
+name = "lru"
+version = "0.12.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "234cf4f4a04dc1f57e24b96cc0cd600cf2af460d4161ac5ecdd0af8e1f3b2a38"
+dependencies = [
+ "hashbrown 0.15.5",
+]
+
+[[package]]
+name = "mach2"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d640282b302c0bb0a2a8e0233ead9035e3bed871f0b7e81fe4a1ec829765db44"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "malloc_buf"
 version = "0.0.6"
@@ -2927,6 +3345,31 @@ dependencies = [
  "paste",
 ]
 
+[[package]]
+name = "midir"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a456444d83e7ead06ae6a5c0a215ed70282947ff3897fb45fcb052b757284731"
+dependencies = [
+ "alsa 0.7.1",
+ "bitflags 1.3.2",
+ "coremidi",
+ "js-sys",
+ "libc",
+ "wasm-bindgen",
+ "web-sys",
+ "windows 0.43.0",
+]
+
+[[package]]
+name = "midly"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "207d755f4cb882d20c4da58d707ca9130a0c9bc5061f657a4f299b8e36362b7a"
+dependencies = [
+ "rayon",
+]
+
 [[package]]
 name = "mime"
 version = "0.3.17"
@@ -2945,6 +3388,12 @@ dependencies = [
  "unicase",
 ]
 
+[[package]]
+name = "minimal-lexical"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.8.9"
@@ -2955,6 +3404,18 @@ dependencies = [
  "simd-adler32",
 ]
 
+[[package]]
+name = "mio"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a650543ca06a924e8b371db273b2756685faae30f8487da1b56505a8f78b0c"
+dependencies = [
+ "libc",
+ "log",
+ "wasi",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "moxcms"
 version = "0.7.9"
@@ -2997,7 +3458,7 @@ dependencies = [
  "cfg_aliases 0.1.1",
  "codespan-reporting",
  "hexf-parse",
- "indexmap",
+ "indexmap 2.12.0",
  "log",
  "rustc-hash 1.1.0",
  "spirv",
@@ -3006,6 +3467,20 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "ndk"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2076a31b7010b17a38c01907c45b945e8f11495ee4dd588309718901b1f7a5b7"
+dependencies = [
+ "bitflags 2.10.0",
+ "jni-sys",
+ "log",
+ "ndk-sys 0.5.0+25.2.9519653",
+ "num_enum",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "ndk"
 version = "0.9.0"
@@ -3051,6 +3526,17 @@ version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "650eef8c711430f1a879fdd01d4745a7deea475becfb90269c06775983bbf086"
 
+[[package]]
+name = "nix"
+version = "0.24.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa52e972a9a719cecb6864fb88568781eb706bac2cd1d4f04a648542dbf78069"
+dependencies = [
+ "bitflags 1.3.2",
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "nix"
 version = "0.29.0"
@@ -3070,6 +3556,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2bf50223579dc7cdcfb3bfcacf7069ff68243f8c363f62ffa99cf000a6b9c451"
 
+[[package]]
+name = "nom"
+version = "7.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+]
+
 [[package]]
 name = "nom"
 version = "8.0.0"
@@ -3437,6 +3933,29 @@ dependencies = [
  "objc2-foundation 0.2.2",
 ]
 
+[[package]]
+name = "oboe"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8b61bebd49e5d43f5f8cc7ee2891c16e0f41ec7954d36bcb6c14c5e0de867fb"
+dependencies = [
+ "jni",
+ "ndk 0.8.0",
+ "ndk-context",
+ "num-derive",
+ "num-traits",
+ "oboe-sys",
+]
+
+[[package]]
+name = "oboe-sys"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c8bb09a4a2b1d668170cfe0a7d5bc103f8999fb316c98099b6a9939c9f2e79d"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.3"
@@ -3613,6 +4132,26 @@ version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
+[[package]]
+name = "petgraph"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "467d164a6de56270bd7c4d070df81d07beace25012d5103ced4e9ff08d6afdb7"
+dependencies = [
+ "fixedbitset 0.2.0",
+ "indexmap 1.9.3",
+]
+
+[[package]]
+name = "petgraph"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4c5cc86750666a3ed20bdaf5ca2a0344f9c67674cae0515bec2da16fbaa47db"
+dependencies = [
+ "fixedbitset 0.4.2",
+ "indexmap 2.12.0",
+]
+
 [[package]]
 name = "phf"
 version = "0.11.3"
@@ -3999,6 +4538,26 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3d6831663a5098ea164f89cff59c6284e95f4e3c76ce9848d4529f5ccca9bde"
 
+[[package]]
+name = "ratatui"
+version = "0.26.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f44c9e68fd46eda15c646fbb85e1040b657a58cdc8c98db1d97a55930d991eef"
+dependencies = [
+ "bitflags 2.10.0",
+ "cassowary",
+ "compact_str",
+ "crossterm",
+ "itertools 0.12.1",
+ "lru",
+ "paste",
+ "stability",
+ "strum",
+ "unicode-segmentation",
+ "unicode-truncate",
+ "unicode-width",
+]
+
 [[package]]
 name = "rav1e"
 version = "0.7.1"
@@ -4109,6 +4668,35 @@ dependencies = [
  "bitflags 2.10.0",
 ]
 
+[[package]]
+name = "regex"
+version = "1.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "843bc0191f75f3e22651ae5f1e72939ab2f72a4bc30fa80a066bd66edefc24d4"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5276caf25ac86c8d810222b3dbb938e512c55c6831a10f3e6ed1c93b84041f1c"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
+
 [[package]]
 name = "rend"
 version = "0.4.2"
@@ -4204,6 +4792,12 @@ version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c20b6793b5c2fa6553b250154b78d6d0db37e72700ae35fad9387a46f487c97"
 
+[[package]]
+name = "rtrb"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad8388ea1a9e0ea807e442e8263a699e7edcb320ecbcd21b4fa8ff859acce3ba"
+
 [[package]]
 name = "rustc-hash"
 version = "1.1.0"
@@ -4414,6 +5008,27 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
+[[package]]
+name = "signal-hook"
+version = "0.3.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d881a16cf4426aa584979d30bd82cb33429027e42122b169753d6ef1085ed6e2"
+dependencies = [
+ "libc",
+ "signal-hook-registry",
+]
+
+[[package]]
+name = "signal-hook-mio"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b75a19a7a740b25bc7944bdee6172368f988763b744e3d4dfe753f6b4ece40cc"
+dependencies = [
+ "libc",
+ "mio",
+ "signal-hook",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.6"
@@ -4589,6 +5204,16 @@ dependencies = [
  "bitflags 2.10.0",
 ]
 
+[[package]]
+name = "stability"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d904e7009df136af5297832a3ace3370cd14ff1546a232f4f185036c2736fcac"
+dependencies = [
+ "quote",
+ "syn 2.0.110",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.1"
@@ -4616,6 +5241,28 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
+[[package]]
+name = "strum"
+version = "0.26.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fec0f0aef304996cf250b31b5a10dee7980c85da9d759361292b8bca5a18f06"
+dependencies = [
+ "strum_macros",
+]
+
+[[package]]
+name = "strum_macros"
+version = "0.26.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c6bee85a5a24955dc440386795aa378cd9cf82acd5f764469152d2270e581be"
+dependencies = [
+ "heck 0.5.0",
+ "proc-macro2",
+ "quote",
+ "rustversion",
+ "syn 2.0.110",
+]
+
 [[package]]
 name = "svg_fmt"
 version = "0.4.5"
@@ -4642,6 +5289,201 @@ dependencies = [
  "siphasher 1.0.1",
 ]
 
+[[package]]
+name = "symphonia"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5773a4c030a19d9bfaa090f49746ff35c75dfddfa700df7a5939d5e076a57039"
+dependencies = [
+ "lazy_static",
+ "symphonia-bundle-flac",
+ "symphonia-bundle-mp3",
+ "symphonia-codec-aac",
+ "symphonia-codec-adpcm",
+ "symphonia-codec-alac",
+ "symphonia-codec-pcm",
+ "symphonia-codec-vorbis",
+ "symphonia-core",
+ "symphonia-format-caf",
+ "symphonia-format-isomp4",
+ "symphonia-format-mkv",
+ "symphonia-format-ogg",
+ "symphonia-format-riff",
+ "symphonia-metadata",
+]
+
+[[package]]
+name = "symphonia-bundle-flac"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c91565e180aea25d9b80a910c546802526ffd0072d0b8974e3ebe59b686c9976"
+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-bundle-mp3"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4872dd6bb56bf5eac799e3e957aa1981086c3e613b27e0ac23b176054f7c57ed"
+dependencies = [
+ "lazy_static",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
+[[package]]
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+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c263845aa86881416849c1729a54c7f55164f8b96111dba59de46849e73a790"
+dependencies = [
+ "lazy_static",
+ "log",
+ "symphonia-core",
+]
+
+[[package]]
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+checksum = "2dddc50e2bbea4cfe027441eece77c46b9f319748605ab8f3443350129ddd07f"
+dependencies = [
+ "log",
+ "symphonia-core",
+]
+
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+dependencies = [
+ "log",
+ "symphonia-core",
+]
+
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+dependencies = [
+ "log",
+ "symphonia-core",
+]
+
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+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-utils-xiph",
+]
+
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+checksum = "ea00cc4f79b7f6bb7ff87eddc065a1066f3a43fe1875979056672c9ef948c2af"
+dependencies = [
+ "arrayvec",
+ "bitflags 1.3.2",
+ "bytemuck",
+ "lazy_static",
+ "log",
+]
+
+[[package]]
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+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
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+dependencies = [
+ "encoding_rs",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-format-mkv"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "122d786d2c43a49beb6f397551b4a050d8229eaa54c7ddf9ee4b98899b8742d0"
+dependencies = [
+ "lazy_static",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-format-ogg"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b4955c67c1ed3aa8ae8428d04ca8397fbef6a19b2b051e73b5da8b1435639cb"
+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-format-riff"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2d7c3df0e7d94efb68401d81906eae73c02b40d5ec1a141962c592d0f11a96f"
+dependencies = [
+ "extended",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
+[[package]]
+name = "symphonia-metadata"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36306ff42b9ffe6e5afc99d49e121e0bd62fe79b9db7b9681d48e29fa19e6b16"
+dependencies = [
+ "encoding_rs",
+ "lazy_static",
+ "log",
+ "symphonia-core",
+]
+
+[[package]]
+name = "symphonia-utils-xiph"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee27c85ab799a338446b68eec77abf42e1a6f1bb490656e121c6e27bfbab9f16"
+dependencies = [
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -4863,7 +5705,7 @@ version = "0.19.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b5bb770da30e5cbfde35a2d7b9b8a2c4b8ef89548a7a6aeab5c9a576e3e7421"
 dependencies = [
- "indexmap",
+ "indexmap 2.12.0",
  "toml_datetime 0.6.3",
  "winnow 0.5.40",
 ]
@@ -4874,7 +5716,7 @@ version = "0.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "396e4d48bbb2b7554c944bde63101b5ae446cff6ec4a24227428f15eb72ef338"
 dependencies = [
- "indexmap",
+ "indexmap 2.12.0",
  "serde",
  "serde_spanned",
  "toml_datetime 0.6.3",
@@ -4887,7 +5729,7 @@ version = "0.23.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6485ef6d0d9b5d0ec17244ff7eb05310113c3f316f2d14200d4de56b3cb98f8d"
 dependencies = [
- "indexmap",
+ "indexmap 2.12.0",
  "toml_datetime 0.7.3",
  "toml_parser",
  "winnow 0.7.13",
@@ -5020,6 +5862,17 @@ version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f6ccf251212114b54433ec949fd6a7841275f9ada20dddd2f29e9ceea4501493"
 
+[[package]]
+name = "unicode-truncate"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3644627a5af5fa321c95b9b235a72fd24cd29c648c2c379431e6628655627bf"
+dependencies = [
+ "itertools 0.13.0",
+ "unicode-segmentation",
+ "unicode-width",
+]
+
 [[package]]
 name = "unicode-vo"
 version = "0.1.0"
@@ -5515,7 +6368,7 @@ dependencies = [
  "bitflags 2.10.0",
  "cfg_aliases 0.1.1",
  "document-features",
- "indexmap",
+ "indexmap 2.12.0",
  "log",
  "naga",
  "once_cell",
@@ -5622,6 +6475,21 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows"
+version = "0.43.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04662ed0e3e5630dfa9b26e4cb823b817f1a9addda855d973a9458c236556244"
+dependencies = [
+ "windows_aarch64_gnullvm 0.42.2",
+ "windows_aarch64_msvc 0.42.2",
+ "windows_i686_gnu 0.42.2",
+ "windows_i686_msvc 0.42.2",
+ "windows_x86_64_gnu 0.42.2",
+ "windows_x86_64_gnullvm 0.42.2",
+ "windows_x86_64_msvc 0.42.2",
+]
+
 [[package]]
 name = "windows"
 version = "0.52.0"
@@ -5632,6 +6500,16 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows"
+version = "0.54.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9252e5725dbed82865af151df558e754e4a3c2c30818359eb17465f1346a1b49"
+dependencies = [
+ "windows-core 0.54.0",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows"
 version = "0.58.0"
@@ -5651,6 +6529,16 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-core"
+version = "0.54.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12661b9c89351d684a50a8a643ce5f608e20243b9fb84687800163429f161d65"
+dependencies = [
+ "windows-result 0.1.2",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-core"
 version = "0.58.0"
@@ -5659,7 +6547,7 @@ checksum = "6ba6d44ec8c2591c134257ce647b7ea6b20335bf6379a27dac5f1641fcf59f99"
 dependencies = [
  "windows-implement",
  "windows-interface",
- "windows-result",
+ "windows-result 0.2.0",
  "windows-strings",
  "windows-targets 0.52.6",
 ]
@@ -5692,6 +6580,15 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
 
+[[package]]
+name = "windows-result"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e383302e8ec8515204254685643de10811af0ed97ea37210dc26fb0032647f8"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.2.0"
@@ -5707,7 +6604,7 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10"
 dependencies = [
- "windows-result",
+ "windows-result 0.2.0",
  "windows-targets 0.52.6",
 ]
 
@@ -5720,6 +6617,15 @@ dependencies = [
  "windows-targets 0.42.2",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
@@ -5771,6 +6677,21 @@ dependencies = [
  "windows_x86_64_msvc 0.42.2",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.52.6"
@@ -5810,6 +6731,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
@@ -5828,6 +6755,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
@@ -5846,6 +6779,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
@@ -5876,6 +6815,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
@@ -5894,6 +6839,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
@@ -5912,6 +6863,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
@@ -5930,6 +6887,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
@@ -5964,7 +6927,7 @@ dependencies = [
  "js-sys",
  "libc",
  "memmap2",
- "ndk",
+ "ndk 0.9.0",
  "objc2 0.5.2",
  "objc2-app-kit 0.2.2",
  "objc2-foundation 0.2.2",
@@ -6167,7 +7130,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "hex",
- "nix",
+ "nix 0.29.0",
  "ordered-stream",
  "rand",
  "serde",
diff --git a/lightningbeam-ui/lightningbeam-editor/Cargo.toml b/lightningbeam-ui/lightningbeam-editor/Cargo.toml
index e6a245f..61b1113 100644
--- a/lightningbeam-ui/lightningbeam-editor/Cargo.toml
+++ b/lightningbeam-ui/lightningbeam-editor/Cargo.toml
@@ -6,6 +6,7 @@ edition = "2021"
 [dependencies]
 lightningbeam-core = { path = "../lightningbeam-core" }
 daw-backend = { path = "../../daw-backend" }
+rtrb = "0.3"
 
 # UI Framework
 eframe = { workspace = true }
diff --git a/lightningbeam-ui/lightningbeam-editor/src/main.rs b/lightningbeam-ui/lightningbeam-editor/src/main.rs
index b8dac2e..1bc8334 100644
--- a/lightningbeam-ui/lightningbeam-editor/src/main.rs
+++ b/lightningbeam-ui/lightningbeam-editor/src/main.rs
@@ -267,8 +267,10 @@ struct EditorApp {
     rdp_tolerance: f64, // RDP simplification tolerance (default: 10.0)
     schneider_max_error: f64, // Schneider curve fitting max error (default: 30.0)
     // Audio engine integration
-    audio_controller: Option<daw_backend::EngineController>, // Audio engine controller for playback
-    audio_event_rx: Option<rtrb::Consumer<daw_backend::AudioEvent>>, // Audio event receiver
+    audio_system: Option<daw_backend::AudioSystem>, // Audio system (must be kept alive for stream)
+    // Playback state (global for all panes)
+    playback_time: f64, // Current playback position in seconds (persistent - save with document)
+    is_playing: bool,   // Whether playback is currently active (transient - don't save)
 }
 
 impl EditorApp {
@@ -302,6 +304,19 @@ impl EditorApp {
         // Wrap document in ActionExecutor
         let action_executor = lightningbeam_core::action::ActionExecutor::new(document);
 
+        // Initialize audio system (keep the whole system to maintain the audio stream)
+        let audio_system = match daw_backend::AudioSystem::new(None, 256) {
+            Ok(audio_system) => {
+                println!("✅ Audio engine initialized successfully");
+                Some(audio_system)
+            }
+            Err(e) => {
+                eprintln!("❌ Failed to initialize audio engine: {}", e);
+                eprintln!("   Playback will be disabled");
+                None
+            }
+        };
+
         Self {
             layouts,
             current_layout_index: 0,
@@ -327,6 +342,9 @@ impl EditorApp {
             draw_simplify_mode: lightningbeam_core::tool::SimplifyMode::Smooth, // Default to smooth curves
             rdp_tolerance: 10.0, // Default RDP tolerance
             schneider_max_error: 30.0, // Default Schneider max error
+            audio_system,
+            playback_time: 0.0, // Start at beginning
+            is_playing: false,  // Start paused
         }
     }
 
@@ -665,6 +683,29 @@ impl eframe::App for EditorApp {
             }
         }
 
+        // Poll audio events from the audio engine
+        if let Some(audio_system) = &mut self.audio_system {
+            if let Some(event_rx) = &mut audio_system.event_rx {
+                while let Ok(event) = event_rx.pop() {
+                    use daw_backend::AudioEvent;
+                    match event {
+                        AudioEvent::PlaybackPosition(time) => {
+                            self.playback_time = time;
+                        }
+                        AudioEvent::PlaybackStopped => {
+                            self.is_playing = false;
+                        }
+                        _ => {} // Ignore other events for now
+                    }
+                }
+            }
+        }
+
+        // Request continuous repaints when playing to update time display
+        if self.is_playing {
+            ctx.request_repaint();
+        }
+
         // Check keyboard shortcuts (works on all platforms)
         ctx.input(|i| {
             // Check menu shortcuts
@@ -726,6 +767,32 @@ impl eframe::App for EditorApp {
             // Registry for actions to execute after rendering (two-phase dispatch)
             let mut pending_actions: Vec<Box<dyn lightningbeam_core::action::Action>> = Vec::new();
 
+            // Create render context
+            let mut ctx = RenderContext {
+                tool_icon_cache: &mut self.tool_icon_cache,
+                icon_cache: &mut self.icon_cache,
+                selected_tool: &mut self.selected_tool,
+                fill_color: &mut self.fill_color,
+                stroke_color: &mut self.stroke_color,
+                active_color_mode: &mut self.active_color_mode,
+                pane_instances: &mut self.pane_instances,
+                pending_view_action: &mut self.pending_view_action,
+                fallback_pane_priority: &mut fallback_pane_priority,
+                pending_handlers: &mut pending_handlers,
+                theme: &self.theme,
+                action_executor: &mut self.action_executor,
+                selection: &mut self.selection,
+                active_layer_id: &mut self.active_layer_id,
+                tool_state: &mut self.tool_state,
+                pending_actions: &mut pending_actions,
+                draw_simplify_mode: &mut self.draw_simplify_mode,
+                rdp_tolerance: &mut self.rdp_tolerance,
+                schneider_max_error: &mut self.schneider_max_error,
+                audio_controller: self.audio_system.as_mut().map(|sys| &mut sys.controller),
+                playback_time: &mut self.playback_time,
+                is_playing: &mut self.is_playing,
+            };
+
             render_layout_node(
                 ui,
                 &mut self.current_layout,
@@ -735,26 +802,8 @@ impl eframe::App for EditorApp {
                 &mut self.selected_pane,
                 &mut layout_action,
                 &mut self.split_preview_mode,
-                &mut self.icon_cache,
-                &mut self.tool_icon_cache,
-                &mut self.selected_tool,
-                &mut self.fill_color,
-                &mut self.stroke_color,
-                &mut self.active_color_mode,
-                &mut self.pane_instances,
                 &Vec::new(), // Root path
-                &mut self.pending_view_action,
-                &mut fallback_pane_priority,
-                &mut pending_handlers,
-                &self.theme,
-                &mut self.action_executor,
-                &mut self.selection,
-                &mut self.active_layer_id,
-                &mut self.tool_state,
-                &mut pending_actions,
-                &mut self.draw_simplify_mode,
-                &mut self.rdp_tolerance,
-                &mut self.schneider_max_error,
+                &mut ctx,
             );
 
             // Execute action on the best handler (two-phase dispatch)
@@ -782,9 +831,9 @@ impl eframe::App for EditorApp {
             // Set cursor based on hover state
             if let Some((_, is_horizontal)) = self.hovered_divider {
                 if is_horizontal {
-                    ctx.set_cursor_icon(egui::CursorIcon::ResizeHorizontal);
+                    ui.ctx().set_cursor_icon(egui::CursorIcon::ResizeHorizontal);
                 } else {
-                    ctx.set_cursor_icon(egui::CursorIcon::ResizeVertical);
+                    ui.ctx().set_cursor_icon(egui::CursorIcon::ResizeVertical);
                 }
             }
         });
@@ -816,6 +865,33 @@ impl eframe::App for EditorApp {
 
 }
 
+/// Context for rendering operations - bundles all mutable state needed during rendering
+/// This avoids having 25+ individual parameters in rendering functions
+struct RenderContext<'a> {
+    tool_icon_cache: &'a mut ToolIconCache,
+    icon_cache: &'a mut IconCache,
+    selected_tool: &'a mut Tool,
+    fill_color: &'a mut egui::Color32,
+    stroke_color: &'a mut egui::Color32,
+    active_color_mode: &'a mut panes::ColorMode,
+    pane_instances: &'a mut HashMap<NodePath, PaneInstance>,
+    pending_view_action: &'a mut Option<MenuAction>,
+    fallback_pane_priority: &'a mut Option<u32>,
+    pending_handlers: &'a mut Vec<panes::ViewActionHandler>,
+    theme: &'a Theme,
+    action_executor: &'a mut lightningbeam_core::action::ActionExecutor,
+    selection: &'a mut lightningbeam_core::selection::Selection,
+    active_layer_id: &'a mut Option<Uuid>,
+    tool_state: &'a mut lightningbeam_core::tool::ToolState,
+    pending_actions: &'a mut Vec<Box<dyn lightningbeam_core::action::Action>>,
+    draw_simplify_mode: &'a mut lightningbeam_core::tool::SimplifyMode,
+    rdp_tolerance: &'a mut f64,
+    schneider_max_error: &'a mut f64,
+    audio_controller: Option<&'a mut daw_backend::EngineController>,
+    playback_time: &'a mut f64,
+    is_playing: &'a mut bool,
+}
+
 /// Recursively render a layout node with drag support
 fn render_layout_node(
     ui: &mut egui::Ui,
@@ -826,30 +902,12 @@ fn render_layout_node(
     selected_pane: &mut Option<NodePath>,
     layout_action: &mut Option<LayoutAction>,
     split_preview_mode: &mut SplitPreviewMode,
-    icon_cache: &mut IconCache,
-    tool_icon_cache: &mut ToolIconCache,
-    selected_tool: &mut Tool,
-    fill_color: &mut egui::Color32,
-    stroke_color: &mut egui::Color32,
-    active_color_mode: &mut panes::ColorMode,
-    pane_instances: &mut HashMap<NodePath, PaneInstance>,
     path: &NodePath,
-    pending_view_action: &mut Option<MenuAction>,
-    fallback_pane_priority: &mut Option<u32>,
-    pending_handlers: &mut Vec<panes::ViewActionHandler>,
-    theme: &Theme,
-    action_executor: &mut lightningbeam_core::action::ActionExecutor,
-    selection: &mut lightningbeam_core::selection::Selection,
-    active_layer_id: &mut Option<Uuid>,
-    tool_state: &mut lightningbeam_core::tool::ToolState,
-    pending_actions: &mut Vec<Box<dyn lightningbeam_core::action::Action>>,
-    draw_simplify_mode: &mut lightningbeam_core::tool::SimplifyMode,
-    rdp_tolerance: &mut f64,
-    schneider_max_error: &mut f64,
+    ctx: &mut RenderContext,
 ) {
     match node {
         LayoutNode::Pane { name } => {
-            render_pane(ui, name, rect, selected_pane, layout_action, split_preview_mode, icon_cache, tool_icon_cache, selected_tool, fill_color, stroke_color, active_color_mode, pane_instances, path, pending_view_action, fallback_pane_priority, pending_handlers, theme, action_executor, selection, active_layer_id, tool_state, pending_actions, draw_simplify_mode, rdp_tolerance, schneider_max_error);
+            render_pane(ui, name, rect, selected_pane, layout_action, split_preview_mode, path, ctx);
         }
         LayoutNode::HorizontalGrid { percent, children } => {
             // Handle dragging
@@ -882,26 +940,8 @@ fn render_layout_node(
                 selected_pane,
                 layout_action,
                 split_preview_mode,
-                icon_cache,
-                tool_icon_cache,
-                selected_tool,
-                fill_color,
-                stroke_color,
-                active_color_mode,
-                pane_instances,
                 &left_path,
-                pending_view_action,
-                fallback_pane_priority,
-                pending_handlers,
-                theme,
-                action_executor,
-                selection,
-                active_layer_id,
-                tool_state,
-                pending_actions,
-                draw_simplify_mode,
-                rdp_tolerance,
-                schneider_max_error,
+                ctx,
             );
 
             let mut right_path = path.clone();
@@ -915,26 +955,8 @@ fn render_layout_node(
                 selected_pane,
                 layout_action,
                 split_preview_mode,
-                icon_cache,
-                tool_icon_cache,
-                selected_tool,
-                fill_color,
-                stroke_color,
-                active_color_mode,
-                pane_instances,
                 &right_path,
-                pending_view_action,
-                fallback_pane_priority,
-                pending_handlers,
-                theme,
-                action_executor,
-                selection,
-                active_layer_id,
-                tool_state,
-                pending_actions,
-                draw_simplify_mode,
-                rdp_tolerance,
-                schneider_max_error,
+                ctx,
             );
 
             // Draw divider with interaction
@@ -1040,26 +1062,8 @@ fn render_layout_node(
                 selected_pane,
                 layout_action,
                 split_preview_mode,
-                icon_cache,
-                tool_icon_cache,
-                selected_tool,
-                fill_color,
-                stroke_color,
-                active_color_mode,
-                pane_instances,
                 &top_path,
-                pending_view_action,
-                fallback_pane_priority,
-                pending_handlers,
-                theme,
-                action_executor,
-                selection,
-                active_layer_id,
-                tool_state,
-                pending_actions,
-                draw_simplify_mode,
-                rdp_tolerance,
-                schneider_max_error,
+                ctx,
             );
 
             let mut bottom_path = path.clone();
@@ -1073,26 +1077,8 @@ fn render_layout_node(
                 selected_pane,
                 layout_action,
                 split_preview_mode,
-                icon_cache,
-                tool_icon_cache,
-                selected_tool,
-                fill_color,
-                stroke_color,
-                active_color_mode,
-                pane_instances,
                 &bottom_path,
-                pending_view_action,
-                fallback_pane_priority,
-                pending_handlers,
-                theme,
-                action_executor,
-                selection,
-                active_layer_id,
-                tool_state,
-                pending_actions,
-                draw_simplify_mode,
-                rdp_tolerance,
-                schneider_max_error,
+                ctx,
             );
 
             // Draw divider with interaction
@@ -1178,26 +1164,8 @@ fn render_pane(
     selected_pane: &mut Option<NodePath>,
     layout_action: &mut Option<LayoutAction>,
     split_preview_mode: &mut SplitPreviewMode,
-    icon_cache: &mut IconCache,
-    tool_icon_cache: &mut ToolIconCache,
-    selected_tool: &mut Tool,
-    fill_color: &mut egui::Color32,
-    stroke_color: &mut egui::Color32,
-    active_color_mode: &mut panes::ColorMode,
-    pane_instances: &mut HashMap<NodePath, PaneInstance>,
     path: &NodePath,
-    pending_view_action: &mut Option<MenuAction>,
-    fallback_pane_priority: &mut Option<u32>,
-    pending_handlers: &mut Vec<panes::ViewActionHandler>,
-    theme: &Theme,
-    action_executor: &mut lightningbeam_core::action::ActionExecutor,
-    selection: &mut lightningbeam_core::selection::Selection,
-    active_layer_id: &mut Option<Uuid>,
-    tool_state: &mut lightningbeam_core::tool::ToolState,
-    pending_actions: &mut Vec<Box<dyn lightningbeam_core::action::Action>>,
-    draw_simplify_mode: &mut lightningbeam_core::tool::SimplifyMode,
-    rdp_tolerance: &mut f64,
-    schneider_max_error: &mut f64,
+    ctx: &mut RenderContext,
 ) {
     let pane_type = PaneType::from_name(pane_name);
 
@@ -1260,7 +1228,7 @@ fn render_pane(
 
     // Load and render icon if available
     if let Some(pane_type) = pane_type {
-        if let Some(icon) = icon_cache.get_or_load(pane_type) {
+        if let Some(icon) = ctx.icon_cache.get_or_load(pane_type) {
             let icon_texture_id = icon.texture_id(ui.ctx());
             let icon_rect = icon_button_rect.shrink(2.0); // Small padding inside button
             ui.painter().image(
@@ -1297,7 +1265,7 @@ fn render_pane(
 
         for pane_type_option in PaneType::all() {
             // Load icon for this pane type
-            if let Some(icon) = icon_cache.get_or_load(*pane_type_option) {
+            if let Some(icon) = ctx.icon_cache.get_or_load(*pane_type_option) {
                 ui.horizontal(|ui| {
                     // Show icon
                     let icon_texture_id = icon.texture_id(ui.ctx());
@@ -1351,80 +1319,86 @@ fn render_pane(
     // Render pane-specific header controls (if pane has them)
     if let Some(pane_type) = pane_type {
         // Get or create pane instance for header rendering
-        let needs_new_instance = pane_instances
+        let needs_new_instance = ctx.pane_instances
             .get(path)
             .map(|instance| instance.pane_type() != pane_type)
             .unwrap_or(true);
 
         if needs_new_instance {
-            pane_instances.insert(path.clone(), panes::PaneInstance::new(pane_type));
+            ctx.pane_instances.insert(path.clone(), panes::PaneInstance::new(pane_type));
         }
 
-        if let Some(pane_instance) = pane_instances.get_mut(path) {
+        if let Some(pane_instance) = ctx.pane_instances.get_mut(path) {
             let mut header_ui = ui.new_child(egui::UiBuilder::new().max_rect(header_controls_rect).layout(egui::Layout::left_to_right(egui::Align::Center)));
             let mut shared = panes::SharedPaneState {
-                tool_icon_cache,
-                icon_cache,
-                selected_tool,
-                fill_color,
-                stroke_color,
-                active_color_mode,
-                pending_view_action,
-                fallback_pane_priority,
-                theme,
-                pending_handlers,
-                action_executor,
-                selection,
-                active_layer_id,
-                tool_state,
-                pending_actions,
-                draw_simplify_mode,
-                rdp_tolerance,
-                schneider_max_error,
+                tool_icon_cache: ctx.tool_icon_cache,
+                icon_cache: ctx.icon_cache,
+                selected_tool: ctx.selected_tool,
+                fill_color: ctx.fill_color,
+                stroke_color: ctx.stroke_color,
+                active_color_mode: ctx.active_color_mode,
+                pending_view_action: ctx.pending_view_action,
+                fallback_pane_priority: ctx.fallback_pane_priority,
+                theme: ctx.theme,
+                pending_handlers: ctx.pending_handlers,
+                action_executor: ctx.action_executor,
+                selection: ctx.selection,
+                active_layer_id: ctx.active_layer_id,
+                tool_state: ctx.tool_state,
+                pending_actions: ctx.pending_actions,
+                draw_simplify_mode: ctx.draw_simplify_mode,
+                rdp_tolerance: ctx.rdp_tolerance,
+                schneider_max_error: ctx.schneider_max_error,
+                audio_controller: ctx.audio_controller.as_mut().map(|c| &mut **c),
+                playback_time: ctx.playback_time,
+                is_playing: ctx.is_playing,
             };
             pane_instance.render_header(&mut header_ui, &mut shared);
         }
     }
 
-    // Make pane content clickable (use full rect for split preview interaction)
+    // Make pane content clickable (use content rect, not header, for split preview interaction)
     let pane_id = ui.id().with(("pane", path));
-    let response = ui.interact(rect, pane_id, egui::Sense::click());
+    let response = ui.interact(content_rect, pane_id, egui::Sense::click());
 
     // Render pane-specific content using trait-based system
     if let Some(pane_type) = pane_type {
         // Get or create pane instance for this path
         // Check if we need a new instance (either doesn't exist or type changed)
-        let needs_new_instance = pane_instances
+        let needs_new_instance = ctx.pane_instances
             .get(path)
             .map(|instance| instance.pane_type() != pane_type)
             .unwrap_or(true);
 
         if needs_new_instance {
-            pane_instances.insert(path.clone(), PaneInstance::new(pane_type));
+            ctx.pane_instances.insert(path.clone(), PaneInstance::new(pane_type));
         }
 
         // Get the pane instance and render its content
-        if let Some(pane_instance) = pane_instances.get_mut(path) {
+        if let Some(pane_instance) = ctx.pane_instances.get_mut(path) {
             // Create shared state
             let mut shared = SharedPaneState {
-                tool_icon_cache,
-                icon_cache,
-                selected_tool,
-                fill_color,
-                stroke_color,
-                active_color_mode,
-                pending_view_action,
-                fallback_pane_priority,
-                theme,
-                pending_handlers,
-                action_executor,
-                selection,
-                active_layer_id,
-                tool_state,
-                pending_actions,
-                draw_simplify_mode,
-                rdp_tolerance,
-                schneider_max_error,
+                tool_icon_cache: ctx.tool_icon_cache,
+                icon_cache: ctx.icon_cache,
+                selected_tool: ctx.selected_tool,
+                fill_color: ctx.fill_color,
+                stroke_color: ctx.stroke_color,
+                active_color_mode: ctx.active_color_mode,
+                pending_view_action: ctx.pending_view_action,
+                fallback_pane_priority: ctx.fallback_pane_priority,
+                theme: ctx.theme,
+                pending_handlers: ctx.pending_handlers,
+                action_executor: ctx.action_executor,
+                selection: ctx.selection,
+                active_layer_id: ctx.active_layer_id,
+                tool_state: ctx.tool_state,
+                pending_actions: ctx.pending_actions,
+                draw_simplify_mode: ctx.draw_simplify_mode,
+                rdp_tolerance: ctx.rdp_tolerance,
+                schneider_max_error: ctx.schneider_max_error,
+                audio_controller: ctx.audio_controller.as_mut().map(|c| &mut **c),
+                playback_time: ctx.playback_time,
+                is_playing: ctx.is_playing,
             };
 
             // Render pane content (header was already rendered above)
diff --git a/lightningbeam-ui/lightningbeam-editor/src/panes/mod.rs b/lightningbeam-ui/lightningbeam-editor/src/panes/mod.rs
index 7f0d0fc..9ab8427 100644
--- a/lightningbeam-ui/lightningbeam-editor/src/panes/mod.rs
+++ b/lightningbeam-ui/lightningbeam-editor/src/panes/mod.rs
@@ -73,6 +73,11 @@ pub struct SharedPaneState<'a> {
     pub draw_simplify_mode: &'a mut lightningbeam_core::tool::SimplifyMode,
     pub rdp_tolerance: &'a mut f64,
     pub schneider_max_error: &'a mut f64,
+    /// Audio engine controller for playback control
+    pub audio_controller: Option<&'a mut daw_backend::EngineController>,
+    /// Global playback state
+    pub playback_time: &'a mut f64,  // Current playback position in seconds
+    pub is_playing: &'a mut bool,    // Whether playback is currently active
 }
 
 /// Trait for pane rendering
diff --git a/lightningbeam-ui/lightningbeam-editor/src/panes/timeline.rs b/lightningbeam-ui/lightningbeam-editor/src/panes/timeline.rs
index 866bba0..e4adccd 100644
--- a/lightningbeam-ui/lightningbeam-editor/src/panes/timeline.rs
+++ b/lightningbeam-ui/lightningbeam-editor/src/panes/timeline.rs
@@ -25,9 +25,6 @@ enum ClipDragType {
 }
 
 pub struct TimelinePane {
-    /// Current playback time in seconds
-    current_time: f64,
-
     /// Horizontal zoom level (pixels per second)
     pixels_per_second: f32,
 
@@ -53,15 +50,11 @@ pub struct TimelinePane {
 
     /// Cached mouse position from mousedown (used for edge detection when drag starts)
     mousedown_pos: Option<egui::Pos2>,
-
-    /// Is playback currently active?
-    is_playing: bool,
 }
 
 impl TimelinePane {
     pub fn new() -> Self {
         Self {
-            current_time: 0.0,
             pixels_per_second: 100.0,
             viewport_start_time: 0.0,
             viewport_scroll_y: 0.0,
@@ -72,7 +65,6 @@ impl TimelinePane {
             clip_drag_state: None,
             drag_offset: 0.0,
             mousedown_pos: None,
-            is_playing: false,
         }
     }
 
@@ -302,8 +294,8 @@ impl TimelinePane {
     }
 
     /// Render the playhead (current time indicator)
-    fn render_playhead(&self, ui: &mut egui::Ui, rect: egui::Rect, theme: &crate::theme::Theme) {
-        let x = self.time_to_x(self.current_time);
+    fn render_playhead(&self, ui: &mut egui::Ui, rect: egui::Rect, theme: &crate::theme::Theme, playback_time: f64) {
+        let x = self.time_to_x(playback_time);
 
         if x >= 0.0 && x <= rect.width() {
             let painter = ui.painter();
@@ -684,6 +676,9 @@ impl TimelinePane {
         active_layer_id: &mut Option<uuid::Uuid>,
         selection: &mut lightningbeam_core::selection::Selection,
         pending_actions: &mut Vec<Box<dyn lightningbeam_core::action::Action>>,
+        playback_time: &mut f64,
+        is_playing: &mut bool,
+        audio_controller: Option<&mut daw_backend::EngineController>,
     ) {
         let response = ui.allocate_rect(full_timeline_rect, egui::Sense::click_and_drag());
 
@@ -1034,7 +1029,8 @@ impl TimelinePane {
         if cursor_over_ruler && !alt_held && (response.clicked() || (response.dragged() && !self.is_panning)) {
             if let Some(pos) = response.interact_pointer_pos() {
                 let x = (pos.x - content_rect.min.x).max(0.0);
-                self.current_time = self.x_to_time(x).max(0.0);
+                let new_time = self.x_to_time(x).max(0.0);
+                *playback_time = new_time;
                 self.is_scrubbing = true;
             }
         }
@@ -1042,12 +1038,17 @@ impl TimelinePane {
         else if self.is_scrubbing && response.dragged() && !self.is_panning {
             if let Some(pos) = response.interact_pointer_pos() {
                 let x = (pos.x - content_rect.min.x).max(0.0);
-                self.current_time = self.x_to_time(x).max(0.0);
+                let new_time = self.x_to_time(x).max(0.0);
+                *playback_time = new_time;
             }
         }
-        // Stop scrubbing when drag ends
-        else if !response.dragged() {
+        // Stop scrubbing when drag ends - seek the audio engine
+        else if !response.dragged() && self.is_scrubbing {
             self.is_scrubbing = false;
+            // Seek the audio engine to the new position
+            if let Some(controller) = audio_controller {
+                controller.seek(*playback_time);
+            }
         }
 
         // Distinguish between mouse wheel (discrete) and trackpad (smooth)
@@ -1154,29 +1155,54 @@ impl PaneRenderer for TimelinePane {
 
                 // Go to start
                 if ui.add_sized(button_size, egui::Button::new("|◀")).clicked() {
-                    self.current_time = 0.0;
+                    *shared.playback_time = 0.0;
+                    if let Some(controller) = shared.audio_controller.as_mut() {
+                        controller.seek(0.0);
+                    }
                 }
 
                 // Rewind (step backward)
                 if ui.add_sized(button_size, egui::Button::new("◀◀")).clicked() {
-                    self.current_time = (self.current_time - 0.1).max(0.0);
+                    *shared.playback_time = (*shared.playback_time - 0.1).max(0.0);
+                    if let Some(controller) = shared.audio_controller.as_mut() {
+                        controller.seek(*shared.playback_time);
+                    }
                 }
 
                 // Play/Pause toggle
-                let play_pause_text = if self.is_playing { "⏸" } else { "▶" };
+                let play_pause_text = if *shared.is_playing { "⏸" } else { "▶" };
                 if ui.add_sized(button_size, egui::Button::new(play_pause_text)).clicked() {
-                    self.is_playing = !self.is_playing;
-                    // TODO: Actually start/stop playback
+                    *shared.is_playing = !*shared.is_playing;
+                    println!("🔘 Play/Pause button clicked! is_playing = {}", *shared.is_playing);
+
+                    // Send play/pause command to audio engine
+                    if let Some(controller) = shared.audio_controller.as_mut() {
+                        if *shared.is_playing {
+                            controller.play();
+                            println!("▶ Started playback");
+                        } else {
+                            controller.pause();
+                            println!("⏸ Paused playback");
+                        }
+                    } else {
+                        println!("⚠️  No audio controller available (audio system failed to initialize)");
+                    }
                 }
 
                 // Fast forward (step forward)
                 if ui.add_sized(button_size, egui::Button::new("▶▶")).clicked() {
-                    self.current_time = (self.current_time + 0.1).min(self.duration);
+                    *shared.playback_time = (*shared.playback_time + 0.1).min(self.duration);
+                    if let Some(controller) = shared.audio_controller.as_mut() {
+                        controller.seek(*shared.playback_time);
+                    }
                 }
 
                 // Go to end
                 if ui.add_sized(button_size, egui::Button::new("▶|")).clicked() {
-                    self.current_time = self.duration;
+                    *shared.playback_time = self.duration;
+                    if let Some(controller) = shared.audio_controller.as_mut() {
+                        controller.seek(self.duration);
+                    }
                 }
             });
         });
@@ -1188,7 +1214,7 @@ impl PaneRenderer for TimelinePane {
         let text_color = text_style.text_color.unwrap_or(egui::Color32::from_gray(200));
 
         // Time display
-        ui.colored_label(text_color, format!("Time: {:.2}s / {:.2}s", self.current_time, self.duration));
+        ui.colored_label(text_color, format!("Time: {:.2}s / {:.2}s", *shared.playback_time, self.duration));
 
         ui.separator();
 
@@ -1205,8 +1231,8 @@ impl PaneRenderer for TimelinePane {
         _path: &NodePath,
         shared: &mut SharedPaneState,
     ) {
-        // Sync timeline's current_time to document
-        shared.action_executor.document_mut().current_time = self.current_time;
+        // Sync playback_time to document
+        shared.action_executor.document_mut().current_time = *shared.playback_time;
 
         // Get document from action executor
         let document = shared.action_executor.document();
@@ -1306,7 +1332,7 @@ impl PaneRenderer for TimelinePane {
 
         // Render playhead on top (clip to timeline area)
         ui.set_clip_rect(timeline_rect.intersect(original_clip_rect));
-        self.render_playhead(ui, timeline_rect, shared.theme);
+        self.render_playhead(ui, timeline_rect, shared.theme, *shared.playback_time);
 
         // Restore original clip rect
         ui.set_clip_rect(original_clip_rect);
@@ -1323,6 +1349,9 @@ impl PaneRenderer for TimelinePane {
             shared.active_layer_id,
             shared.selection,
             shared.pending_actions,
+            shared.playback_time,
+            shared.is_playing,
+            shared.audio_controller.as_mut().map(|c| &mut **c),
         );
 
         // Register handler for pending view actions (two-phase dispatch)
diff --git a/src/main.js b/src/main.js
index 181832a..a104856 100644
--- a/src/main.js
+++ b/src/main.js
@@ -3,6 +3,7 @@ const { listen } = window.__TAURI__.event;
 import * as fitCurve from "/fit-curve.js";
 import { Bezier } from "/bezier.js";
 import { Quadtree } from "./quadtree.js";
+import { initRenderWindow, updateGradient, syncPosition, closeRenderWindow } from "./render-window-integration.js";
 import {
   createNewFileDialog,
   showNewFileDialog,
@@ -822,6 +823,30 @@ window.addEventListener("DOMContentLoaded", () => {
       }
     }
   })();
+
+  // Initialize native render window after layout is ready
+  (async () => {
+    try {
+      // Wait for layout to be fully positioned
+      await new Promise(resolve => setTimeout(resolve, 200));
+
+      // Find the stage canvas (should be first in canvases array)
+      const stageCanvas = canvases[0];
+      if (stageCanvas) {
+        console.log('Initializing native render window...');
+        await initRenderWindow(stageCanvas);
+        console.log('Native render window initialized successfully');
+
+        // Make functions available globally for testing
+        window.updateRenderGradient = updateGradient;
+        window.syncRenderWindow = syncPosition;
+      } else {
+        console.warn('Stage canvas not found, skipping render window initialization');
+      }
+    } catch (error) {
+      console.error('Failed to initialize native render window:', error);
+    }
+  })();
 });
 
 window.addEventListener("resize", () => {