I'm thinking of getting ATV, primarily for music. I would connect it via optical cable to my AV Receiver; I live in a small condo, so all my AV gear is together in one room. If I listen to music via ATV, can I also watch TV (say, a football game, w/ no volume for the TV, obviously) at the same time? Or will my HDTV have to remain on the ATV screen to play music? I know, a horribly worded inquiry... I hope I'm making sense.