diff --git a/examples/publish-wav/index.ts b/examples/publish-wav/index.ts
index 3db75df4..56722969 100644
--- a/examples/publish-wav/index.ts
+++ b/examples/publish-wav/index.ts
@@ -60,10 +60,9 @@ while (written < dataSize) {
     Math.trunc(frameSize / channels),
   );
   await source.captureFrame(frame);
-  await source.waitForPlayout();
-
   written += frameSize;
 }
+await source.waitForPlayout();
 
 await room.disconnect();
 await dispose();
diff --git a/packages/livekit-rtc/src/audio_source.ts b/packages/livekit-rtc/src/audio_source.ts
index 33224f22..9df75d7a 100644
--- a/packages/livekit-rtc/src/audio_source.ts
+++ b/packages/livekit-rtc/src/audio_source.ts
@@ -29,7 +29,8 @@ export class AudioSource {
   /** @internal */
   currentQueueSize: number;
   /** @internal */
-  releaseQueue = new Queue<void>();
+  release = () => {};
+  promise = this.newPromise();
   /** @internal */
   timeout?: ReturnType<typeof setTimeout> = undefined;
 
@@ -82,13 +83,21 @@ export class AudioSource {
       },
     });
 
-    this.releaseQueue.put();
+    this.release();
+  }
+
+  /** @internal */
+  async newPromise() {
+    return new Promise<void>((resolve) => {
+      this.release = resolve;
+    });
   }
 
   async waitForPlayout() {
-    await this.releaseQueue.get().then(() => {
+    return this.promise.then(() => {
       this.lastCapture = 0;
       this.currentQueueSize = 0;
+      this.promise = this.newPromise();
     });
   }
 
@@ -105,7 +114,7 @@ export class AudioSource {
 
     // remove 50ms to account for processing time
     // (e.g. using wait_for_playout for very small chunks)
-    this.timeout = setTimeout(this.releaseQueue.put, this.currentQueueSize - 50);
+    this.timeout = setTimeout(this.release, this.currentQueueSize - 50);
 
     const req = new CaptureAudioFrameRequest({
       sourceHandle: this.ffiHandle.handle,
diff --git a/packages/livekit-rtc/src/index.ts b/packages/livekit-rtc/src/index.ts
index 45e23bd1..efffac47 100644
--- a/packages/livekit-rtc/src/index.ts
+++ b/packages/livekit-rtc/src/index.ts
@@ -40,4 +40,5 @@ export {
 export { EncryptionType, EncryptionState } from './proto/e2ee_pb.js';
 export { StreamState, TrackKind, TrackSource } from './proto/track_pb.js';
 export { VideoBufferType, VideoRotation } from './proto/video_frame_pb.js';
+export { ParticipantKind } from './proto/participant_pb.js';
 export { dispose } from './ffi_client.js';
diff --git a/packages/livekit-rtc/src/participant.ts b/packages/livekit-rtc/src/participant.ts
index 73bbee54..63e24266 100644
--- a/packages/livekit-rtc/src/participant.ts
+++ b/packages/livekit-rtc/src/participant.ts
@@ -2,7 +2,7 @@
 //
 // SPDX-License-Identifier: Apache-2.0
 import { FfiClient, FfiHandle } from './ffi_client.js';
-import type { OwnedParticipant, ParticipantInfo } from './proto/participant_pb.js';
+import type { OwnedParticipant, ParticipantInfo, ParticipantKind } from './proto/participant_pb.js';
 import type {
   PublishDataCallback,
   PublishDataResponse,
@@ -71,6 +71,10 @@ export abstract class Participant {
   get attributes(): Record<string, string> {
     return this.info.attributes;
   }
+
+  get kind(): ParticipantKind {
+    return this.info.kind;
+  }
 }
 
 export type DataPublishOptions = {