I've got a DVD rip of episodes of a TV show on my hard drive. They're .VOB seperated into 1gig chunks, so each hour is 1.8 gigs in two files. I queue up the files by selecting it to play the first VOB and then the second. The first file plays in English, but the second will switch what language "language 1" is, usually to French from English. This is weird because when I was experimenting with the MPlayer compile for Windows, I could set it to audio channel 128 (-aid 128) and play the entire thing in English. It's the same language on the DVD, so I don't see it would be switching when it switches files.
OS: Windows XP Home SP1
VLC: 0.8.1 Stable (switching to latest nightly build)