Download this:
PS3 Media Center X - Stream Media to Wii
Features
Videos - PS3 Media Center X lets you stream and watch videos in the Flash video format (FLV) on your PS3. You can download flash videos from many places on the internet or create your own using
PS3 Video 9.
Music - PS3 Media Center X lets you playback MP3s on your PS3 without the need of any copying or downloading.
Pictures - Red Kawa Media Center lets you view pictures on your PS3 without the need of any copying or downloading.
Files - PS3 Media Center X lets you browse and copy files located on your server to your PS3.