IMEEM

http://www.imeem.com/

IMEEM is an online community where millions of fans and artists discover new music, videos and photos, and share their tastes with friends. so you can find ANYTHING on this site, but I can't promise you will find EVERYTHING you're looking for due to Copyright etc. You will very often find only a 30 sec music extract.
However, if you register, you can upload your music, your videos, create a playlist to feature on your webpage. Like this :