Hi, I was wondering if I could put more than one ac-3 track in an m4v container. Well, I probably can, but will the Apple TV be able to make sense of it? Which ac-3 track would be played by default if the Apple TV is hooked up to a surround amplifier? I know switching aac tracks is no problem, I am just not sure what I should do, since I have several ac-3 tracks for one movie which I want to keep in their original quality. Thanks in advance!