To Remove the “Purchased” Flag from Apple Music/iTunes Files

I am not advocating piracy here. This is just a method to remove the purchased flag from Apple Music/iTunes downloaded files, and make them show up as normal AAC files if you have some reason to do so.

The shotgun approach is to just remove all the meta-data from the stream. This is simple enough with my favorite media swiss army tool ffmpeg:

for file in *.m4a; { ffmpeg -i "$file" -map_metadata -1 -c copy -y "$file"-stripped.m4a; } 

This little on-liner will create a copy of each m4a file with the meta-data removed. You can then use something like MusicBrainz Picard to re-tag them with the proper meta-data sans the purchased information. I think I know how to do a more surgical approach, and I will add that if I can figure the syntax out.

As far as I can tell, the relevant tags that need to be removed are:

purchase_date   : 2020-01-01 11:04:44
account_id      :

However, I do not see these tags in Picard.

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