I have Pinnacle Showcenter in my front room and run alternative software on my server for it called SwissCenter,
http://www.swisscenter.co.uk. A nice little feature that this guy has added to his software is this MusicIP. It lets you choose a track then say play songs similar to the the one you have chosen. Saves creating loads of playlists youself, you have to run an initial scan of your music which can take a long time, but the download is free.
Just an idea! May already be able to do this and i have not worked out how yet!
