It looks to me like duplicate files. Look at the two paths.
/mnt/raidvol/thevault/music/iTunes/iTunes Music/The Police/Synchronicity (Remastered)/05 Miss Gradenko 1.m4a
/mnt/raidvol/thevault/music/iTunes/iTunes Music/The Police/Synchronicity (Remastered)/05 Miss Gradenko.m4a
The first has a ‘1’ in the filename before the extension.