I thought you could just do an auto-tag all at once.. So, I pointed to a drive with about a dozen albums on it.. selected all, then did 'auto tag' and accepted the next box... Then, blammo, all 12 albums were 'The Slip' by NIN, with the same album art, name, songs, etc. To fix, I chose each album one at a time, did a search for the album, then updated with new info.
The way I 'wish' it worked is to select all, have it ask if the tag/art it found is what I want, say OK, go to the next automatically.
As it stands, you do each album one at a time. Not really 'mass tagging'. I've got a long way to go to learn it, though.
-C