Songza

Songza - "allows users to search for any song or band and listen immediately using a simple, elegant interface. It is rapidly becoming the central place on the Web to find and listen to music. Artists can benefit from the visibility of music on Songza by participating in our Self-Promotion Beta Program. Your song will be featured in the Recommended list on the Songza homepage (where tens of thousands of listeners will see it and can listen); you also get to define the links that appear next to your song while it's playing so that people can buy the song or visit your band's website"