itunes app

Use Cadence Desktop to analyze your iTunes music library for each songs BPM

iConcertCal is a free iTunes plug-in that can monitor your music library.

It shows you how long each song in your iTunes library has been playing.

Reimport music and playlists from iPod, iPhone, iPod Touch, or iPad into iTunes.

Manage your iTunes music on whatever computer you happen to be at.

Easiest way to transfer music from iPod to computer or iTunes.

Share what you’re listening to in iTunes with your Twitter followers.

Analyze iTunes library and tell you what is your music listening habits.

It can let you tag your movies for a professional display in iTunes, Apple TV.

I used to use iTunes on a MacBook to organize my MP3 collection.