Recovering Purchases from an iPod
In case you don’t back up your iTunes library, Apple also offers another option for recovering songs and video purchased from the iTunes Store—provided you have an iPod. Up until now, Apple has made accessing music and video on an iPod a one-way street. However, iTunes 7 includes an option to recover purchased content from an iPod and copy it back into iTunes. This gives you a way to recover your content in the event of a computer failure. It also prevents copyright infringement because you can copy that content only back to a computer that is authorized within your iTunes account.