transcode ac3

can I use the project file that dvd2avi creates, in tmpgenc to transcode all my vobs audio at once like the guide shows for the video part? making one audio file instead of one for each vob. then remux the transcoded audio back into the vobs? Ive tried searching but only find guides on transcoding the audio net getttin it back to my vobs. If I missed it please post me a link. thanks jerry

check 

when you create the project you must select before the option about audio stream and demux all or demux selected, when the project is done dvd2avi create for you a .ac3 off ALL vobs and you can use any program to trancode the audio like besweet.