do you have a direct cable connected from the cdrom drive to the sound card itself? if not, certain apps won't play CD's because they need a sound cable connection. KSCD won't play them no matter what you try. you can get xmms to work, though, with the proper plugin(s). i'm at work right now & unfortunately i can't remember the plugin(s) name(s) for xmms. but, it's easy enough to get them. go to
Easy URPMI, follow the instructions to set up "contrib", "main", & "plf" sources. then use Mandrake Control Center->software management->install software & type xmms in the search. get all plugins for it you find. you might also want to to a search for codecs & get any of those you might be missing & need/want.
you'll need to then go to xmms preferences & choice your proper audio & video drivers & apply the settings.
otis