To play your iTunes Store purchases, you may need to authorise your Mac or PC first. Here's how.

Want to access to your apps, movies, music, and other content on more than one computer? If so, here's our guide to authorizing your Mac or PC using iTunes.

It's easy to make purchases on iTunes once you jump through a hoop or two. Here's how to authorize a computer on iTunes to get started.

If you want to log in to your iTunes account from another computer, such as while you are traveling, you can authorize up to five stand-alone computers at any one time to access your iTunes ...