It's taken a while (over two years in fact), but Audible is now available on Sonos again. Following an incompatible update the service was removed in August 2015, much to the annoyance of bibliophiles everywhere, but today it makes its triumphant return -- and support for Alexa is set to follow, too. Just add Audible as a service in the Sonos App, or play directly from the Audible app, to get started.