“The Blues Kitchen Radio” is a podcast. Sonos doesn’t support playing Spotify podcasts from the Sonos app. But if you have an iPhone, you can AirPlay the podcast to your Sonos One.

Note that Spotify is in control over what programs or podcasts are made available toSonos users. Unfortunately Sonos has no control there, they are told what Spotify server to get the data from, it’s up to Spotify to manage what data is exposed.