A friend of mine can't hear the sounds from a DVD, or a video file on a DVD, with VLC. If he opens the DVD with WMP, there's no problem. I opened the DVDs with Gspot, and all video and sound codecs are ok.
I must say I can hear the sound of the same DVDs on my PC, with the same Windows OS, the same VLC version and settings. Could be a problem of the dvd player? The sound cable of the dvd player? Some software incompatibility? Some mess on his pc?
We use VLC 0.8.6c, Windows XP sp2.