ok boys and girls i'm back here's a stupid question somebody may know about... if i were, say, encoding some AC3 file with, say, ffmpeg tools - would i start with a six channel wave file or something? and then what order are the channels in? i assume the encoder is going to have a way it wants to do that and if I have my center channel in what it thinks is right surround - well that could be a problem, yeah? my guess from the learning i've done so far is it goes: 1 - left 2 - right 3 - center 4 - sub 5 - right surround 6 - left surround anybody have confirmation? thanks! - A