I encoded Master and Commander using XMpeg. The video to divx and the audio to MP3. Then I also rip the orig ac3 and use nandub to put the divx video back with the ac3 orig track. Usually this works fine but for M and C it is totally whacked out. I tried AC3fix and also extracted again with AC3tool but no luck. The MP3 part of the orig encode is fine. So a couple of questions. If I take the MP3 and reconvert it back to AC3 will I still have quality 5.1 sound? Is the audio ac3 rip getting trashed somehow from the ripping process? If so why do some rip OK and others like this dont? Thanks