diff --git a/lib/hooks/useMultiTrackPlayer.ts b/lib/hooks/useMultiTrackPlayer.ts
index 9bb0d4d..d7a1586 100644
--- a/lib/hooks/useMultiTrackPlayer.ts
+++ b/lib/hooks/useMultiTrackPlayer.ts
@@ -365,7 +365,10 @@ export function useMultiTrackPlayer(
         sourceNodesRef.current.push(source);
       }
 
-      animationFrameRef.current = requestAnimationFrame(updatePlaybackPosition);
+      // Only schedule next frame if animation frame ref is still valid (not cancelled)
+      if (animationFrameRef.current !== null) {
+        animationFrameRef.current = requestAnimationFrame(updatePlaybackPosition);
+      }
       return;
     }
 
@@ -391,7 +394,10 @@ export function useMultiTrackPlayer(
     }
 
     setCurrentTime(newTime);
-    animationFrameRef.current = requestAnimationFrame(updatePlaybackPosition);
+    // Only schedule next frame if animation frame ref is still valid (not cancelled)
+    if (animationFrameRef.current !== null) {
+      animationFrameRef.current = requestAnimationFrame(updatePlaybackPosition);
+    }
   }, [duration]);
 
   const play = useCallback(() => {