We need more disambiguation options

[pimzand]

--add-disambiguation is a boolean option. It currently means to append the disambiguation string from MusicBrainz to the album filename only.

Ideally, we would have four types of disambiguation

• album filename
• album name tag
• artist filename
• artist name tag

@zzarne what would you propose for the option names?
We could change --add-disambiguation to require an option argument with some string that encodes all four possibilities.
We could load the boolean value that is currently saved in jack,musicbrainz, and save that into a string.