XSPF is an mp3player that makes it possible to add a music background to one's site (.mp3).
It's very simple to add it to your pages, and it's customizable too.
You may in fact modify some settings as colour, track title and volume.
Here's an example of XSPF at work:
(click on the play button to start audio)
Instructions on how to insert the XSPF player in your EditArea site