I have just finished creating a divx of the matrix and it looks great but when i play it the centre channel is missing from the audio. I encoded it using the divx 5.0.5 pro codec in virtualdub. I did 2 passes then used virtualdub mod to add the ac3 audio track that dvd2avi produced. When virtualdubmod adds the ac3 it says that it is 5 channel and not six - as the original on the dvd was. So somewhere in between the dvd and the dvd2avi file something has gone wrong - any ideas? I used dvd decrypter to rip the vobs. I have also tried using nandub to add the audio with the same result - perfect surround sound but no voices! - i have checked all my ac3 settings and they are fine!