This setting is set to off because I’m not always around when the tv is turned on by someone, and the audio system would be (usually) off. I use a pair of Adam Audio T8V active monitors with a Wiim Ultra, which is connected also to the TV via a hdmi arc cable… Everything used to work fine even after the latest update, I’m not sure what could have happened… But now when I do want to listen to the tv via the audio system, with everything on I switch the Wiim to hdmi, the tv shows hdmi output, all perfect on paper… except no sound comes out of the system.