[H3g3m0n]

Have a look at MusicBrainz Picard. They have a massive community database with audio fingerprinting.

It's not %100 though so you do have to do a quick verification that it got the right one (some tracks can end up on compilation discs). Normally a normal lookup is better/quicker than the fingerprinting.

https://musicbrainz.org/doc/MusicBrainz_Picard

[dubya]

I've been using it, but it's still pretty bad for classical and most jazz.