Noncommercial songs for PSAs or otherwise health promotional videos

I'm in the middle of creating a short, generic, multi-use video documenting the Asian Liver Center's LiveRight Run 2008 tailored towards the Vietnamese population. I've been mulling for a legal approach for music for my short clip and had settled upon recruiting the Pizookies to create a short jam to match the mood of this piece (something akin to Dashboard Confessional's "Don't Wait"). Today a delve into the concept and culture of open source and the Creative Commons licensing serendipitously presented another solution of entering "noncommercial songs" into a search engine (as demonstrated on their site):


Up until this moment, I had only knowledge of a database of royalty-free loops.