iTunes is a music library management application and a digital music player for Mac OS X and Microsoft Windows published by Apple Computer and distributed free of charge. It can also be used to access the Apple online music store: the iTunes Music Store (iTMS).
If you have an iPod, the Apple audio player, iTunes is tailor-made for it. It perfectly synchronizes the iPod music library with that on the PC.
With iTunes you can also burn music compilations (on the fly) in standard audio CD, CD MP3 or AAC format readable by a CD walkman, a car radio and DVD players, or just as simple files.