Have you ever tried to put on a MP3 player on your website? Or do you plan to put one? I had been doing a project for one client where he needed me to put on a MP3 player on his website for his users to listen to the songs they upload to their private profile.
I checked out many flash MP3 players but most of them were lacking some features and some had more features then I needed for making it simple yet working and appealing for users.
Then I found the Free Flash MP3 Player at e-phonic.com
It was free for use and even the registered version was available for a small fee.
Comes with 4 nice skins and examples on how to integrate it and for more help there is always an online documentation.