diff --git a/.changeset/neat-pens-yawn.md b/.changeset/neat-pens-yawn.md
new file mode 100644
index 00000000..a7434921
--- /dev/null
+++ b/.changeset/neat-pens-yawn.md
@@ -0,0 +1,5 @@
+---
+'@livekit/rtc-node': patch
+---
+
+Clear pending timeout in AudioSource.close() to prevent use-after-free
diff --git a/packages/livekit-rtc/src/audio_source.ts b/packages/livekit-rtc/src/audio_source.ts
index 16096b87..7ffe9dbc 100644
--- a/packages/livekit-rtc/src/audio_source.ts
+++ b/packages/livekit-rtc/src/audio_source.ts
@@ -145,6 +145,14 @@ export class AudioSource {
   }
 
   async close() {
+    // Clear any pending playout timeout so its callback doesn't fire after
+    // the handle is disposed, which would reference freed native state.
+    if (this.timeout) {
+      clearTimeout(this.timeout);
+      this.timeout = undefined;
+    }
+    // Resolve any pending waitForPlayout() promise so callers don't hang.
+    this.release();
     this.ffiHandle.dispose();
     this.closed = true;
   }