doubleTwist is a iTunes clone to sync your android, palm pre, blackberry or in fact up to more than a hundred devices. It looks like iTunes, and you can buy music directly from amazon. If you have a nexus one, give it a try.
TuneUp is a tool that will allow clean up your itunes digital music collections which are probably a mess… rename tracks like track01, add the cover, album and so… and automatically. I did posted previously about another one: pollux but looks it does not work anymore….