Did you know that it's possible to have multiple iTunes libraries, with completely separate content in them, on one computer? While not only a neat lesser-known feature, it also helps you:
- Keep separate each person's music, movies, and apps on a family computer shared by more than one family member
- Sync multiple iPods, iPhones, or iPads to a single computer without getting other people's music on your device unintentionally (other options for this include using playlists, using the iPod management screen, and multiple user accounts).
This technique works with iTunes 9.2 and higher.
Having multiple iTunes libraries is similar to having two separate computers each with iTunes on them. The libraries are completely separate: Music, movies, or apps that you add to one library won't be added to the other unless you copy the files to it. For computers shared by multiple people, this is generally a good thing.
To use multiple iTunes libraries on your computer, you first have to create them. To do this, quit iTunes if it's running. Next hold down the Option key (if you use a Mac) or the Shift key (if you use Windows) and then click the iTunes icon to launch the program. Keep holding the key down until the pop-up window above appears.
If you've already got multiple iTunes libraries on this computer, skip to step 3. If not, click the "Create Library" button.