Wait what, how does (did?) that work?

And more importantly (I can find the opus files myself): can/could it retrieve my account data to know which songs to download?

I've been able to partially reconstruct my music from localStorage, downloaded songs on my phone (yay for having root and access to that data folder), and memory, but it's still incomplete

Fwiw, here's my own little contribution to getting song data from Grooveshark, in my first blog post: https://lgms.nl/blog-1 (not my first blog site though). Happy to meet other fans :D