Am I better off leaving off the 2 channel audio when backing up movies? I think my dvd player automatically plays 5.1 audio and it plays fine on my television. I have yet to hook up my home theater. I know the 2 channel audio takes up precious video space. I have started leaving off the DTS audio because it takes up tons of space. That's another question I had. Can you really tell that much difference in DTS and regular 5.1? Any thoughts would be appreciated.