In the realm of CloneDVD2, when it comes to selecting audio streams, I see alot of people say to just pick one stream to free up space for the main movie. Naturally, I can see why I don't need foreign language streams. And I would assume I'd want 6 channel over 2 channel when it comes to the main movie (I understand that "extras" require 2 channel, as they don't use 6). What I'm curious about is that I'll see that there's 2 AC-3/2 english channels assigned to the main movie sometimes; why 2? I usually deselect one, but why are there 2 to begin with? Also, if I were to only select the DTS audio stream that is available on some discs, will I have no sound if I don't have DTS support on my player/tuner? Just curious.