Article / Updated 03-26-2016
You can always add music files to iTunes. After you save or copy an MP3, AIFF, or WAV file on your hard drive, you can simply drag it into the iTunes window to bring it into your library. If you drag a folder or disk icon, all the audio files that it contains are added to your iTunes library.
You can also choose File→Add to Library on a Mac, or File→Add File to Library and File→Add Folder to Library on a Windows PC, as an alternative to dragging.