Auto-tagging MP3s

"MusicBrainz Picard

For something different check out MusicBrainz Picard.

It's cool because it will identify MP3's based on a 'audio fingerprint' compared to their database, so you can figure out songs that are missing all tags, or that are mis-tagged.

I haven't found anything else that works quite like it.

That plus a decent tag editor/renamer/organizer (ie: Tag & Rename, or EasyTag) and you're set.."

"Winamp
I've had a good experience using Winamp for this process. I did try some of the others, but I wasn't get the results I expected.
There's a blog post walkthrough on how to use it here.

But basically in the Media Library having loaded your MP3s right click and go:
Send to -> Auto Tag"

"beets

Beets is similar to Picard, in that it automatically looks up correct tags for files in the MusicBrainz database, but it works on the command line. If you're an advanced user comfortable with the terminal, you might appreciate beets' flexibility. Like Picard and Foobar, it supports very flexible directory and file naming schemes.

The beets screencast is a good introduction."

"Taghycardia can help in auto tagging large collections. Though it is a special tagger mainly designed to provide the accessibility of MP3 albums on tag-sorting portable audio players, it can be used for general tagging.

The ""fix cover art"" feature turned out to be especially useful, as it uses the cover art found both online and locally in folders to auto-tag my MP3 files."

"Songbird

Tagging is extremely easy for me... I can use Songbird to...

find all non tagged songs (by genre)
find all songs given tags I don't use (by genre)

Apply tags to all these files is pretty simple."