I Get into the habit of moving my other media files off to my PC either an external USB drive or a Home Server.
but seems to be more reliable on PS3 and install it on the computer with the media. there are many options on this. browse content and hit play. So note that if the file has encoding errors on my PC may just work but i keep playing where the PS3 or X360 a simply way to play the file. The device is including Xbox connected to the TV to find stream content to the TV. If you have both an xbox 360 and ps3 on network connecting 2 different tvs to computer holding all vids. this is extremely easy to use for streaming pics audio and video and the 360 is a also good.
this is compatible from XP using media player 11 and from tiger using PS3 extender.