I'm trying to convert an old school kung fu movie with 2 ac3 audio tracks. Would I need to create 2 seperate aac tracks to ensure that they play on any tv? I know with 5.1 ac3 you need a 2 channel aac for it to play on any tv. Also, in subler, would I just select one of the aac tracks as the default? Will there be any issues with playing audio with that many tracks or do I just need to change the alternate group on them?