Update app.py

app.py

@@ -175,7 +175,7 @@ def render_labeling_ui():
     # Audio player
     try:
         audio_bytes = load_audio_bytes(audio_folder, current_filename)
-        render_audio_player(audio_bytes)
+        render_audio_player(audio_bytes, str(current_index))
     except FileNotFoundError:
         st.error(f"Audio file not found: {current_filename}. Please contact admin.")
 
@@ -186,10 +186,10 @@ def render_labeling_ui():
         value=1.0,
         key="speed_slider",
     )
-    # Update playback rate via JS
+    player_id = f"audio-player-{current_index}"
     st.markdown(
         f"""<script>
-        var audio = document.getElementById('audio-player');
+        var audio = document.getElementById('{player_id}');
         if (audio) {{ audio.playbackRate = {speed}; }}
         </script>""",
         unsafe_allow_html=True,