Media Share uses Windows Media Player as a defaulkt server. It looks in the default Windows folders that are created. In Wiundows & these are the public folders. The file type that Media Share plays is MPG2. I suggest yuou locate a short MPG2 clip, put it in the Public Videos folder. Open Windows Media Player and configure the player to share under the streaming header. Temporarily disable your computer's firewall and then do a red button (inside card door) reset of your HD DVR. When booted up the music etc option should appear under the Menu -> Extras screen.