This article is a stub. You can help the microformats.org wiki by expanding it.
If you're looking to document existing audio formats, like WAV, OGG, AAC, AC3 etc., you've found the right place
You might also be looking for audio-info-formats - information about audio that's often posted on the web, like name of track, artist, length of track, which album(s) it belongs to, etc.
Most audio formats are binary and thus don't really make sense to mark up (with or without microformats). However, here's a few as examples.
- MP3 - MP3 is an audio format that contains info about the audio as well as expressed in ID3 tags. As that is info about the audio as distinct from the audio itself, it's documented on the audio-info-formats page.