Downloaded the Amazon Music app for PC. This was deftly hidden, Amazon's own site links only a web player and if you click "Download App" it gives you a QR code. For your phone I guess. I had to go to the Windows Store.
Although Amazon's help pages claim the PC app can download purchases, I still show no purchased music. I think this is because every time I log in on the US store the app redirects me to Canada. Yes, I am in Canada right now. But I was in the US in 2007. When I bought the music?
@marcoshuerta @mcc i think they just converted anything you had purchased into that, then. I never paid for upgrades and last I checked I get the DRM free higher bitrate versions of those tracks.
On a mac IIRC anything you purchased can be downloaded to local storage and then you just go to the folder on the local disk and copy the files from there.
Stuff that you only have access to via subscription is stored separately.