No 5.1 sound on Sony Bravia KD-49XE8005
I'm only getting stereo output when playing videos with AAC or AC3 5.1 sound. They work fine through a physical Chromecast device, and other apps on the TV: Netflix, Amazon Video, are fine. All apps and OS are up to date.
I have asked about this on AVForums but have got nowhere. I think I'm the only person on the planet using the Plex app on a Sony TV!