Update app.py

app.py

@@ -212,7 +212,7 @@ async def preview_handler(event):
     if user_id in states and states[user_id]:
         # Send the current modification for preview
         output_file_name = f"{user_id}_preview"
-        output_file = Fusion.saveSound(states[user_id]['audio'], output_file_name)
+        output_file = await Fusion.saveSound(states[user_id]['audio'], output_file_name)
         await event.edit("`Uploading...`", buttons=buttons)
         # Edit the message and send the audio file in the edited message
         await event.edit(file=output_file, text="`Preview the current modification:`", buttons=buttons)
@@ -229,7 +229,7 @@ async def send_handler(event):
     if user_id in states and states[user_id]:
         # Send the modified sound file
         output_file_name = f"{user_id}_modified_audio"
-        output_file = Fusion.saveSound(states[user_id]["audio"], output_file_name)
+        output_file = await Fusion.saveSound(states[user_id]["audio"], output_file_name)
         await event.reply(file=output_file)
 
         # Clean up - remove the user's state and the saved audio file