You can use Home Sharing to import items from up to five iTunes libraries on other computers. To use Home Sharing, you must have an Apple ID.
Any time you download an item from Apple Music or the iTunes Store to a computer in your Home Sharing network, you can have the item automatically downloaded to the other computers in the network as well.
Follow these steps on each computer you want to include in your Home Sharing network.
Choose File > Home Sharing > Turn On Home Sharing.
Type your Apple ID and password, then click Turn On Home Sharing.
If you don’t have an Apple ID, click “Create New Apple ID” and follow the onscreen instructions.
Important: Computers you import from must be on, with iTunes open and Home Sharing turned on.
Choose a shared library from the pop-up menu at the top left.
Click the Show pop-up menu at the bottom of the iTunes window, then choose “Items not in my library.”
Select the items you want to import, then click Import.
Choose a shared library from the pop-up menu at the top left.
Click Settings at the bottom of the window.
Select the types of content you want to automatically import.
Click OK.
On each computer, choose File > Home Sharing > Turn Off Home Sharing.
If a shared computer doesn’t appear when Home Sharing is on, turn Home Sharing off, then turn it on again.
To learn how to add other content to iTunes, see How to add items to iTunes.