4 points
It’s probably a combination of https://github.com/yarrm80s/orpheusdl https://npmjs.com/package/librespot and YouTube dl
1 point
I can’t see any explanations leaping out in those readmes either, any idea how they work?
2 points
As far as I can tell they spoof an official client playing the song and then download the file instead.
1 point