iTunes enhances Apple's media software in a number of ways. It is used mostly for managing audio and video content for your PC or Mac. If you sync your iPod with iTunes, all of the music on the iPod will be replaced with the music that is available on the computer that you're using. This is especially problematic if you want to use multiple computers to sync your iPod. If you wish to keep all your music and stop this from happening, this article will help you.