Still can't get it to interact with Music.app on my Mac. Throws error about MyMediaiTunesMusicLibrary.xml saying "Aborted: Input string was not in a correct format"
I've been through my library and got rid of all the characters likely to be unfriendly to XML and throwing your generated file at xmllint doesn't show up any problems.
Library is about 25k songs, MacOS version is 10.15.6, Music.app is 1.0.6.10 and your version is 1.3.125.0
Aborted: Input string was not in a correct format
Re: Aborted: Input string was not in a correct format
Well bollocks to you lot if you can't respond to a forum post or an emailed support query.