Great stuff! I've recently been trying another way to use my library, using the popular tagging method similar to Flickr or Del.icio.us. Granted, this is a Mac only thing right now, as it requires Quicksilver. While listening, I can tag a song with any number of descriptive tags, and later create smart playlists based on them. Find TuneTag here, http://christopholis.com/?p=87. He'
s also working on a Widget that does the same thing.