This all looks a bit technical to me -you might lose interest and I should have tried this on a smaller scale. .1st part of request: it says JPEG compression 713 files 14.6mb.
Some of the covers have in fact downloaded -but others are still blank. I did the import from a copy (on stick) from another PC."Boxsets -dec.17 2019 57.9mb (still have that copy and its original)
The merged db is a large one .-with 6399 records. Not sure how I find out if the cover files are cover.jpg or folder.jpg