A strike against the empire, if you have a spare pc you can now put all your MP3's on a single machine that you can control with a browser. It spots double tracks using audio fingerprinting, allows you to tag your music and when bands install one they can distribute their new tracks to their fans without the record company in-between, fully automatically.  
 
This is not something for everyone right now, only the people with large mp3 collections will appreciate this, especially if they have lots of friends that have lots of mp3's as well.  
 
You can rate your mp3's, search them, organize them and play them all from within your browser.  
 
There is a screenshot there to show you what it looks like when it is working, the iso is about 300 M...