If i Tunes cannot find it’s Media folder path, it will revert back to the default path on your local hard drive, causing any new tracks to be imported from that location; you’l need to restart i Tunes once the network path is available to fix this—i Tunes won’t pick it up automatically while it’s running.

Once this has been done, you will be left with a single, master i Tunes library containing all of your content which will be stored on the networked hard drive.

You can also find instructions in the Transferring your i Tunes Library article on how to move your library over to the networked hard drive in the event that you want to be able to access it from more than one computer.

Another option is you plan on accessing your i Tunes library database from multiple computers is to simply put the i Tunes library on the networked hard drive and then point all of your computers to use that database.

Note, however, that you will still need to be very careful about only running one copy of i Tunes at a time as it is not designed to be accessed by multiple computers and data corruption can occur if you try to do this.

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So with all of the above in mind, your best option is to choose whatever library you consider to be your “primary”—likely the one you load your i Pod and i Phone from—and then ensure that you’ve consolidated all of your content from that library onto the networked hard drive by following the instructions in our tutorial on Transferring your i Tunes Library.

Once your main library has been consolidated onto the networked hard drive, check your i Tunes Preferences to ensure that the i Tunes Media folder is still set to that network location and that the You can then begin importing your additional tracks from your other sources into your main library.

This means that you will essentially need to manually import all of your music and other media files into a single library database.

This can either be a completely new i Tunes library that you create in order to consolidate everything, or you can simply import the content from your other libraries into whichever is your “main” library.

However there are Applescripts that can be used to manually adjust information such play counts and last played dates and it is possible to export your playlists from one library and import them into another.