http://www.justsalsa.com/

http://www.stockton.edu/~colonh/latinweb/salsa.htm
(mentions Marc Antony)

http://www.smacdance.com/ This is a group of salsa lovers based in NY.

You can do a google search, just put in
salsa music

Make sure you add MUSIC, or you will recipes for salsa

Good luck!
Sandie