Music Match will try to to tag you music if you use its Supertagging info. Will not always work but if you know the artist it will get about 90% for you.
I have several THOUSAND MP3's that have no ID3 tag information. Trying to manage these with iTunes or even Rio Music Manager is a disaster, with no or random categorization. Is there any software or web based service that will identify a song (I guess using the CDDB or Freedb database) and automatically populate the necessary information??? Other suggestions??