I think I've seen all the tv spots at this point, both on tv and the internet. To my knowledge the music in the spots are original music that will be on the WTC soundtrack, "The Life of David Gale", or the song "fix you" by coldplay. I'd be surprised if it wasn't one of those three cause I've been looking forward to this movie all year and have been eager for any glimpse at it. Check wtcmovie.com again and listen to the samples from the soundtrack and see if what your looking for is there.

Good Luck