You don’t have to do anything because this issue will be automatically resolved the next time you plug in the hard drive.If you add new music or movies during the unplugged period, you can always consolidate those files to the external storage later.You are also able to create sub-folders and place imported media from Music to Audiobooks into them. Ensure that the metadata is working well for you and has, at the very least, correct info. Right-click a song, select Get Info and choose the Info tab. If you have a small amount time, however, you would be better served with this tutorial.
The following process was done using the Mac version of i Tunes, but the steps are similar under the Windows version.
Depending on your version you may find this particular option under the View menu.
To rid your Mac of music, you may want to consider i Tunes Match, which allows you to stream and sync your library through the cloud.
Now that you have your i Tunes library nice and neat, you need to get your new computer recognizing the i Tunes library on your old computer. Now you should be able to navigate through the music on your old computer from your new computer.
You should see your old computer’s library on the left-hand side of your new computer’s i Tunes window under “Shared.” The catch is that you can only view your music in one big list.