Extracting Atmos track formats from Amazon streaming music service

[SteelyDon]

Preamble:
Amazon Music, Tidal, and Apple Music are all adding/converting/remixing their catalogs to include Dolby Atmos spatial audio object encoding.

AFAICT, Tidal and Apple Music will play the new format on a few devices (e.g. Apple TV) which will output to HDMI for playback through a conventional home theater receiver/speaker system.

Amazon Music, however, is limited to playing back the new mixes downmixed (?with HRTF?) over headphones for mobile devices (Apple Music is doing similar on iPhone) and only playing back multichannel on one of their standalone speaker/streamer devices. (Possibly Sonos is getting multichannel as well?)

I have no desire to switch from Amazon Music to Apple Music or Tidal, nor to buy an Apple TV.
I do wish to listen to my Amazon Music Playlists on my home speaker system.

Question:
How can I play the Atmos-encoded files saved to my phone on another device? (Preferably with the Amazon Music player for another platform, but I'm expecting that won't work.)

Theoretically the tracks should all be wrapped as M4A or MP4 files.

The Amazon Music player is downloading and storing these files on my Android phone for offline playback. I can't see them in the folders where .mp3 purchases from the music store are stored.

I have access to a couple of different devices I think I can get root access for.

Does anyone have any insights?

[webvan]

Was also wondering about that ! Did you ever make any progress with this ?

[october262]

Was also wondering about that ! Did you ever make any progress with this ?

try musicfab - https://musicfab.org/?ad=forum

[webvan]

The point of a forum is to share ACTUAL experiences, not to tell someone to try a commercial product that may or may not work.