im a mandrake user, but i still strongly recommend xine. its powerful, free, and its better then some commercial players. to get it and the dvd support, go to this address:
http://cambuca.ldhs.cetuc.puc-rio.br/xine/
and download libxine, xineui, curl7, libdvdcss, and libdvdcss-devel. note you must have the libdvdcss-devel package installed as well as libdvdcss.