I posted this in response to someone asking about that song that plays in the pilot. This is Leroy's website. He's got a CD coming out sometime soon. There's some song samples on here and the song you're looking for is called "Get Together". My computer tries to save the sample as an mp3 but make sure that you open it as an m3u.
This is for those that probably skipped over it since it's a question that seems to come up on here often.