[itsme]

You can filter by File Paths. In the Windows version you have to scroll down in the dropdown box as the number of visible entries is limited by Windows.
   
This is the floating dialog mentioned by Geoff:
   
Like Geoff I also struggled which one is the right one. A memory hook is: the checkboxes in the floating dialog symbolize the "same ones" in the list: The checked one stands for all checked boxes in the list, clicking it unselects all selected songs. Clicking the empty one selects all currently unselected songs.