I've stayed at all three, and we like them all. There was a goof up our first trip on property and we were booked at Sports, which we never would have chosen. We found we liked it.
Music was very nice, had Broadway, and loved that it was quiet. This last trip, we snagged Toy Story at movies-it's the first to book, and boy, it was busy (2 weeks post 9/11, even). Rooms are soundproofed well, though.
If you want quiet, Music is the way to go. I'd recommend Broadway or Jazz. Sports-we enjoyed Tennis, it also was peaceful. I don't know about your family, but after all the activity of the day, we didn't want to be right by the "Halls", although we will be this trip. Note to self--CALL the room assignor and request the side AWAY from the pool, lol!
Suzanne