audio output

Hello ! Forgive me I'm not an english speaker but I'll try to be as clear as I can :) Recently, the audio output of my computer turn into headphones, even if there's no headphone connected to the computer. And sometimes it just switch between headphones and the speakers, for no apparent reason...

Hi I have some issues with my Sonos arc not outputting audio from all apps but I think that I just can’t select the right audio output on Apple TV. The only option I have in audio output is TV Speakers (HDMI). what option am I looking for? edit: ok I found out that I appear to be missing...

I have two second gen. Airport Express configured to join my (non Apple) wireless network. Their only use is as AirPlay audio outputs. The units themselves function fine, (confirmed by playing audio from my iPhone), but on my iMac I am now unable to switch audio output to either of the boxes...

I was wondering if somebody who has experience upgrading old Mac Pros could tell me if I put in a GTX 1080 or 1080 Ti (flashed) if I will be able to use the display port audio output. As it is, I am not able to select my monitor for audio output, connected via mini display port to HDMI. From...