1. Check the audio file’s location – make sure that it is stored on the same device as the PowerPoint presentation.
2. Make sure the audio file is compatible with PowerPoint.
3. If the file is a different format, convert it into a compatible one.
4. Make sure you the audio file is linked correctly – if it’s linked from another device, try saving a local copy of the file and linking it instead.
5. Right-click the audio file in PowerPoint to check if audio playback is enabled.
6. Check the volume settings to make sure the audio is not too quiet.
7. Try exiting and reopening the PowerPoint presentation.