iTunes enables you to organize and enjoy music, video, books, and more on Macs, Windows PCs, iPods, iPads, or iPhones. With the integration of iTunes to the iTunes Store, it is easy to add great audio, video, books, and apps for mobile devices to your iTunes library whenever you want.
In addition to being incredibly powerful, iTunes is also very well designed and therefore easy to use. In fact, the application is so well designed that a number of its interface elements have been adopted in other applications, including the OS X Finder application that manages the desktop on your MacBook Pro.
A Source Pane
Shows all the sources ...