I’ve been doing a lot of googling around but no luck yet. I’ve found this message repeats a lot in the Sqeezebox Server Debug info:
Plugins::Spotify::ProtocolHandler::handleDirectError (366) stream failed – bad player: -5
That message led me to this discussion:
Where they talk about changing the CLI port which I tried without success. They also talk about some other things but it goes above my head!