Some links if you are looking to make money on your music talents.
http://www.LukeHits.com
This site created by Luke Eddins matches unsigned artists with producers who make films, TV shows, and commercials. For his services Eddins charges 30% to 50% of whatever your music generates through his connections. Many of his clients are making 5 figures and up now on their songs where it would have been near impossible before.
Another good site is:
http://www.Tonos.com
This site was founded by hugely successful music producers David Foster, Carole Bayer Sager, and Kenneth "Babyface" Edmonds. Lots of good connections and resources here.
Another interesting site if you are looking to back music groups and make investments in their song rights is:
http://www.Digicirc.com