[tomjakubowski]

Lots and lots of FOSS music players use libspotify or can otherwise connect to your Spotify account.

Here's just one. It's BYO frontend. Last I knew, there were a bunch of them. https://mopidy.com/

Also look into mpd, the music playing daemon.

[explaininjs]

That's a good attempt, but I'd rather not run a server - if I'm paying for the service I'd like to have an API I can run/write a frontend against. And ideally I'd have the ability to listen to lossless music, not whatever encoding Spotify thinks I deserve.