>When I play a particular dvd I get either a loud grating sound with >message about format ao being bad and something about big endian not >supported in AC. Or I get a message that there is just no audio (and get This happened to me with "Chicken Run". Some DVDs seem to have a Dolby multi-channel surround-sound track as the default audio, and mplayer can't handle it. If you run "mplayer -v ...", you'll see (among other things) a list of the audio tracks and their corresponding ids. Pick one that mplayer understands and specify it with the "-aid" option.
