If you have attempted to re-link your files and have been unsuccessful you may wish to remove these entries from the Media Library.
Note: Before you remove Unavailable Albums you are best to try and re-link these files. Click here for instructions.
In the Media Library area select [Unavailable Albums] ^AU from the Query drop down combo box. You will see the unavailable albums displayed in the list.
Select the Unavailable Albums you wish to remove by right-clicking and select Remove from Media Library.
Re-Link Unavailable Albums (Files)
Importing Files to the Media Library