So I'm trying to back up my DVD collection. What I have been doing is ripping the DVD with DVDFab and then joining the individual .vob files with JoinVobFiles. The problem with a few is that the joined .vob files will have a non-English audio track as the default track. I tried using Mkvmerge to cut the audio tracks that weren't English, but the resulting movie file as a smaller aspect ration (I can't seem to edit these settings with Mkvmerge while using a .vob). Are there any other programs that I can use to nix audio tracks without changing the video quality, or is there any other way to change the default audio track? I heard that I may need to demux/reauthor, but for a newbie like me, I couldn't find a step by step guide. I don't know a lot about this, so if there are any good simple tutorials, that would be good.