1. Open iTunes (version 10 or later).
2. In the menu bar, click File > Home Sharing > Turn On Home Sharing.
3. Enter your Apple ID and password, then click Turn On Home Sharing.
4. If you have multiple computers, click the Allow Home Sharing on this computer checkbox for each computer you want to share content with.
Once Home Sharing is turned on, you can access shared content from any computer or device that is connected to your home network and signed in with your Apple ID.