For windows not really. MPeg2 files are muxed during the conversion process where the audio & video are combined into the one file. I've come across a movie or 2 from the net which didn't have sound. Duh! Somebody who didn't know what they were doing.
Sorry as a mac user I'm not sure about all the apps for windows. I would highly recommend you post on either or both the video & dvd forums that belong to the links given at the beginning of this thread.