If you are using a Mac click the Apple Logo and selec Software Update. Windows users can update iTunes by searching for Apple Software Update on their Start Menu and selecting check for updates. You can also download iTunes for Windows or Mac using the link below
- iTunes in the Cloud. iTunes now stores your music and TV purchases in iCloud and makes them available on your devices anywhere, any time, at no additional cost.
- Automatic Downloads. Purchase music from any device or computer and automatically download a copy to your Mac and iOS devices.
- Download Previous Purchases. Download your past music, TV, app, and book purchases again, at no additional cost. Previous purchases may be unavailable if they are no longer on the iTunes Store.
- Sync with your iPhone, iPad, or iPod touch with iOS 5.
- Wi-Fi Syncing. Automatically sync your iPhone, iPad, or iPod touch with iTunes any time they’re both on the same Wi-Fi network.
For information on the security content of this update, please visit:support.apple.com/kb/HT1222