Yes I already figured out that it should be the storefront id, I think I will drop saving that field altogether as it is not really that useful. You already choose which storefront by which country store to collect the information from anyway. Another option will be to convert the country code to the respective storefront id.
The "x" is deliberate, although I should have removed it (actually the entire surrounding code) as well as the debug output, which I always keep forgetting to remove, before publishing. Sorry about that. I store the debug on the root because I run MP3tag on my M1 Mac via crossover and it is too tedious to keep it buried deeply.
I was originally hesitant to update the script until the 3.06b version of MP3Tag was not a beta version, but because it was requested I rushed out a new version yesterday. If the script is run on a pre beta version they will not be stored as expected. Which brings me another curious question to what happens if you open those tags again after saved in 3.06a and earlier and save again in v 3.06b?
Anyway here are new version, not much changes except some removals.
Apple Music for Mp3Tag 1.6.zip (33.0 KB)
iTunes API for Mp3Tag 1.8.zip (34.3 KB)