Old m4p to m4a
I have a .m4p song I purchased from iTunes at 2005 with my old Apple ID email address. I can authorize my Mac and play it in Big Sur Music.app and QuickTime Player.
But unlike later songs purchased with my current Apple ID email address, that does not show in my purchased songs.
Is it possible to convert it and other old .m4p files to DRM-less .m4a files?