Doesn’t show up as an option in my ‘add a service’ here in the US. Where are you? Have you checked with Wolfgang’s Music, to see if they’ve removed their internet stream from Sonos?

Is the the music provider you are talking about: https://www.wolfgangs.com/live-music-streaming/? Google seems to show some entries to it being available on Sonos, but they are all obsolete. Maybe ask Wolfgangs?

If you own an iPhone, you could probably Airplay the service to Sonos.

I’m not seeing it listed as supported on https://support.sonos.com/en-us/services

@davidb55 

I also recommend to contact wolfgang‘s directly. 
https://www.wolfgangs.com/contact-us.html

On their website there’s still information about Sonos integration online but in fact it’s not available on Sonos right now. 
https://www.wolfgangs.com/sonos.html

Also their Sonos integration info page seems only to be found using Google. Going the way from their mainpage I can not find the link to their Sonos info page. 
Seems they removed Sonos integration.