MP3-Info is a simple Mac application that was designed to help you easily get detailed information about your audio files. You can say that this application is, basically, a plug-in for Finder and iTunes and it can prove to be quite useful for organizing your music collection.
After launching MP3-Info, you will be greeted by a stylish and intuitive interface from where you can quickly select to synchronize with your iTunes or Finder selection in order to retrieve the information about your audio file. You can even set this application to sync with the currently iTunes song and rename the file based on its tags.
Once you have selected the desired synchronization method, MP3-Info will display detailed information about the audio file such as it size, duration and bit rate as well as any ID3 tags that it might have (song, artist, album, etc.). If the selected or playing song has any lyrics, this tool will also display them and, if you are a Twitter user, you can instantly tweet the song you are listening to with just a click of a mouse.
To sum it all up, if you are in need of an easy-to-use Mac application that can help you retrieve information about your audio files and rename them in a very simple manner, then MP3-Info is a good choice.