Update app.py

app.py

@@ -18,6 +18,7 @@ def audio_overlay(audio1, audio2, save_filename):
 
     overlayed_audio = audio_raw1.overlay(audio_raw2)
     save_path = os.path.join("/tmp", save_filename)
+    print("Task completed. Result file is in: " + save_path)
     overlayed_audio.export(save_path, format="mp3")
 
 # 任务队列和状态存储