Currently, when an audio file is embedded in a PowerPoint presentation, it only plays automatically as sound without providing user control options (e.g., play, pause, progress bar) like a video element does. This limitation causes inconvenience for teachers during class, as they cannot easily manage when or how the audio is played. It significantly impacts the overall teaching and learning experience in ClassIn.

1. Audio in PowerPoint should support a pop-up MP3 player feature, allowing users to control playback (play, pause, progress, volume).
2. The design and behavior should align with the existing video pop-up experience to ensure consistency and ease of use.