It’s not a happy experience to find all encoders to watch movies. even more, we know, media player won’t play rm and realplay won’t play wmv, as they are adversary. although i seldom watch movies on my linux box, i am still very happy to hear that there is no such boring issues if you installed xine and mplayer. The two players solves all.
actually, on fedora i only use mplayer, on debian i only use xine, and i have almost never need to consider where to grab encoders — they can all be apt-gotten or downloaded from mplayers’s homepage. i donno what’s the underlying architecture of vedio players under linux, it’s a bit strange that xine can use encoders provided by mplayer with a small trick. (just copy all encoders to /usr/lib/win32)