Put simply, if you truncate this table and run Artwork Downloader, all of your art should be refreshed. Clean library ensure not files are listed Re-add your source, choose 'local information only', as your scraper. Use it if you want, no guarantees etc. Looking at any folder you will note that the content list out as fast as the hardware you are using, give files in that folder and the display will be sluggish at best, put files in it, and bang the listing is magic. The above is - I'm sure - not the 'approved method' - but it works and it's straightforward.