mp3

[Moshinwangjah]

I was wonderin if there was a code for playing mp3's on a site.

[jkd]

If the surfer is in Windows, you can embed Windows Media Player into a webpage.

A quick search on google returns something from webmonkey.com, so you can be pretty assured they explain it in detail:
http://hotwired.lycos.com/webmonkey/01/49/index2a.html?tw=multimedia