Description
iTunes is a media player, media library, online radio broadcaster, and mobile device management application developed by Apple Inc. It is used to play, download, and organize digital audio and video on personal computers running the OS X and Microsoft Windows operating systems. The iTunes Store is also available on the iPod Touch, iPhone, and iPad. Through the iTunes Store, users can purchase and download music, music videos, television shows, audiobooks, podcasts, movies, and movie rentals in some countries, and ringtones, available on the iPhone and iPod Touch.
(source: http://en.wikipedia.org/wiki/ITunes)