I'm using ATV with YTTV and the Sonos app says sound is in DD 5.1 when watching NFL in multiview. In reading other forums, YTTV is only stereo in multiview, and it's clear this is the case when putting my ear to the surrounds. When switching to an individual game rather than Multiview, 5.1 kicks in.
So why does the Sonos app say it's 5.1 when the multiview broadcast is stereo? This makes me doubt Sonos' software recognition.