Bonnie and I are enjoying the Audible Harry Potter dramatizations. My only disappointment, and it is a big one, is that Sonos still isn't playing Audible content in Atmos. I hope that gets addressed at some point.
@JonathanMosen Just started these new dramatized versions last week. If someone does install the Audible app on Apple TV, and it indeed plays in Dolby Atmos, would you please post and let us know? That would be worth the time if it works. Sonos needs to enable it in their native Audible support.