In a recent post I mentioned about embedding audio into a PowerPoint presentation which you wanted to share or distribute (say on a VLE).
This is proving to be quite a popular post, but I did think that some people may be looking at it on how to add audio to a presentation in the first place.
You can add audio clips to a presentation or record audio for use in the presentation. You can even play a track from a CD, though you will not be able to embed a CD audio track.
To add audio to a PowerPoint presentation (this is using PowerPoint 2003) from the menu.
Insert > Movies and Sounds > Sound from File…