Comment on Jaikoz

While the GUI is admittedly not at all Mac'ish (primarily because it is Java and cross-platform), the application is the absolutely best and most efficient tagger I have used. You can configure it, point it at your music library, and watch as it uses the acoustic fingerprinting and database lookups to automatically fix your tags, get artwork, and organise your collection. Author is constantly improving it too, and directly takes feedback from users.