Everton from Connected Internet posted a nice article where he is detailing his steps to add tags and cover artwork to his mp3 collection using a few selected freeware programs and iTunes. He suggests to use Picard for the tagging process because Picard is able to add most tags of known albums automatically.
The only information that are not added by Picard are the cover artwork and the genre. It is understandable that the genre is not being added because it is sometimes difficulty to select a genre that everyone would be comfortable with. Itunes will be used to add the cover artwork right from the iTunes store.
