I think this might be what you are looking for:
http://firstmusicdjs.com/
The 2013 and 2012 song lists posted above are from that website. The guide is made by the DJ who does a bunch of the Ontario events. Generally I find his definition of what songs are "clean" for a FIRST event is pretty strict, and it isn't universally followed (I heard numerous do not play songs from his list at champs this year). That doesn't mean I think it is a bad thing though, as I believe the Ontario events have some of the best music in FIRST, and the fact that it is not all radio hits helps. Listening to some of the other events via webcast makes the Ontario events stand out by comparison.