Yes, MP3 is possible. I've done it on my wiki, check http://tousauxbalkans.jexiste.fr/MP3 .
Copy this content of http://iubito.pastebin.com/793915 into a new file extensions/mp3.php, follow instructions, and enjoy !
2006/9/21, Kim Grinfeder grinfeder@miami.edu:
Hello, I would like to know if its possible to embed quicktimes and MP3 files in the Wiki pages?
Thanks, Kim