NeatMP3 is a Free MP3 Organizer and Tag Editor for Mac OS X.

With NeatMP3 you can organize, rename and edit the tags of your audio files in a single processing session. You can also move your new organized/edited files to a new location of your choosing and save your current settings as a profile for later use. While editing tags you can also play the current song to faster identify its title, artist or other information that needs to be filled in the tags. NeatMP3 saves all the processing information in a log file that can be accessed by the user from within the application. The user interface is very intuitive and easy to use. The software also benefits from a very detailed online help page.