Ah, I see via an internet search that podbean is a podcasting application. Sonos has written an API for anyone to use to add themselves to the Sonos ecosystem, but the work needs to be done by Podbean, not by Sonos. You could point the folks at Podbean to the Sonos partners page for more information.

Alternately, if you have an appropriate Sonos speaker, and an Apple device, you could choose to use AirPlay 2 to send the signal to your Sonos system.