Pmp 120 (bought refurbished on ebay $240 incl. shipping)
Iriverter + Anydvd to convert dvds
Itunes & Jhymn for mp3s
emule and soulseek for mp3s
My custom excel vba application to make random playlists of mp3s
http://tinyurl.com/f3xvh
VirtualDub to increase the volume of DVDs (Iriverter does it to, but VirtualDub has a preview)