Real Player is not the same as Windows Media Player. You need to install xmms for mp3 files, be sure to get the codec. To see wms files install mplayer with the codecs. I have both im my system and they are working quite well. Visit http://bordeaux.freshrpms.net/
, there you can get most of them. Visit mplayer and follow the installation for FC5. Real Player get the rpmfile to install. If you are usinfg FC 5 remouve the Helix Player.