No matter how your library became a frustrating mess, there's almost always something you can do to get your library happy again.
Below are a number of different suggestions, each with its own upsides and downsides.
Aside from the simplicity, the reason I chose it is because it’s applicable for both Windows and Mac.
The following process was done using the Mac version of i Tunes, but the steps are similar under the Windows version.
You don't need to do this, but it will make your life easier and will help prevent problems in the future.
But you also realize that bringing an external hard drive everywhere you go is a bit impractical.
Then an exclamation mark will appear next to the item.
If you still keep the items that you want to play inside the local drive, click ““.
Note that if you're on Windows and your i Tunes isn't showing its menu (it doesn't by default), turn it on with Ctrl B now.
Another important note: There are a couple of features in i Tunes that are on by default on Mac but are normally off on Windows.
If you can live without that information, this method tries to preserve everything else about your i Tunes music library.