I have both the vob's and the divx versions. The vob's aren't demuxed. When extracting the audio, I did a test from one of the vob files with besweet. So when I listened to some of the channels, all the sounds are in the center. I'm guessing they did this so you'd get all the sound even if you only had the center speaker to work with, or maybe it's just better for using dolby digital tracks with prologic, or something, I don't know why. I suppose it's possible it's more seperate in the dts version, but as i've heard, it's not that easy to get dts out. Actually DTS sounds better in some cases. (Really it depends on the company who releases the movie and what they're using).
Right now i'm using Fellowship of the Ring (extended), for a little project i'm doing :-)
It's nice they have fellowship the complete recordings out now, i'll be able to use it to redo my soundtrack, and in fact there's a 5.1 mix on one of the discs, which is cool.
In any case thanks thus far!
Keith Weatherby II