Sadly, the only good info I can give is that I’ve heard it in two different commercials, one old and one new. The old one was a Dennis Miller Live spot that spoofed a Volkswagen ad, so the same music may have been in the VW ad, too. The new one is the TV trailer for The Bourne Identity*.
It’s a very spacey-sounding piece with what sounds like a woman’s voice saying “Aaaaaaaaaaaahhhhhhhhhh” over and over with heavy reverb.
Sorry I can’t give a better description. Thanks in advance.