Might I suggest (if you don't mind) getting a player with in-built codecs & is generally very reliable: VLC - (click on link) _ (choose nearest mirror site)

To see what it can do, see http://www.videolan.org/vlc/features.html

You can also download extra skins for it; eg: Privately designed skins & also How Can I load A new Skin In VLC Player?

VLC is also good for either audio or video streaming, playing dvd's, vcd's, etc.