When the screen is going off (computer not even in sleep), the music just stop playing. It's kind of really annoying (and power consuming) if I have to have my screen always On (or move my mouse every time) just to listen to music... And the fact of increasing the time before sleep doesn't change anything if I don't change the time before screen off.
I'm not the only one, but no response on the others post talking of this problem, so I'm doing my own (not a really difficult problem to solve I guess. Probably just a misuse of Windows API. But if you, Spotify, could just pay attention to users problem or at least answer it would be great...)