Do either of the following:
1 Drag a file or folder from the desktop to the iTunes window. If you add a folder, all the files it contains are added to your library.
2 In iTunes, choose File > Add to Library or Add Folder to Library, locate a file or folder, then click Open.
In this short video tutorial you will learn how to buy and download music, videos, TV shows, and movies on iTunes. We’ll also show you how to listen to music on your device after it has already been purchased. If you are trying to put the same song on another device you own, we’ll show you that as well.