If you work hard to ensure that the music files in your iTunes library are tagged exactly right, you may be frustrated with iTunes’ tools for doing this. The iTunes 12 Info window–the one that displays when you select tracks and press Command-I–is less efficient than that of previous versions, and while there used to be a way to display the old-style window, you can no longer do so.
Metadatics is a powerful tool that’s a bit more efficient to use and offers more features for changing tags than iTunes. You can use it for basic tagging, as you would with iTunes, when you rip tracks from CDs or add downloads to your library. But it goes much further.
Read the rest of the review on Macworld.