ploplinux 420 gnome mplayer play video only have audio output but no display ,i put the codecs file in the right place(opt/codes) ,it works under 412 version ,maybe mplayer cannot find the codecs . i check that codecs was linked to /opt/lib/codecs . i try to make a link to /usr/lib/codecs ,only failed with read-only syste. i think /opt/lib was not under mplayer's codecs searching path. how can i fix it , please help me....