Is there a groovy script that will fetch artist and album art?

I use this format for movies NewMovies/{az}/{any{collection}{plex[1]}}/{plex[2]} [{fn.match(/3D/)+', '}{vf}, {ac}, {af}] This gives me titles and collections. But I would like to hardlink or reflink the titles which reside in collections to their respective individual, alphabetical listing ie NewMov...

For my format, I use this NewMovies/{az}/{any{collection}{plex[1]}}/{plex[2]} [{fn.match(/3D/)+', '}{vf}, {ac}, {af} It works perfectly, giving me collections that exist. However, if a file belongs to no existing collection, how can I automate grouping it into a collection that might happen later on...