Sonos once again supports audio streaming on its smart speakers after abruptly eliminating audiobook service two years ago. Your link to the ad page is currently out of service, but the Android police copied it here.
The Sonos One speakers are already compatible with Amazon's Alexa and Amazon Music, so it was surprising that Amazon's Audible audiobook service has been absent for so long. Support was initially removed when Sonos staff discovered an incompatibility between the Audible and Sonos integration after an update.
To celebrate his return, Audible offers Sonos users two credits if they sign up for a 30-day free trial through the application, instead of the only credit it usually offers. He is also adding Miles Davis's autobiography, aptly titled Miles, as an attempt to sweeten the deal.