iTunes is a piece of software that lets you add to, organize and play your digital media collection on your computer, as well as sync it to a portable device. It's a jukebox player along the lines of Songbird and Windows Media Player, and you can use it on a Mac or Windows machine. The most significant difference between iTunes and some other media players is the built-in iTunes Store (where you can get podcasts; iPhone, iPad and iPod touch apps; music videos; movies; audiobooks and TV shows, too) and its multi-level integration with Apple's iPhone and its iPodportable media player.