Add debug print statement for audio playback in play_audio function

src/audio.py

@@ -26,6 +26,7 @@ def play_audio(file_path: str, loop: bool = False) -> Callable[[], None]:
     Returns:
         A callable that stops the audio playback when invoked.
     """
+    print(f"Playing audio: {file_path} (loop={loop})")
     if file_path.endswith(".wav"):
         if loop:
             # Use sox's play command with repeat for looping wav files