Sonos gear, and especially a Play:1 is not usually suitable for projector usage. Many projectors lack even optical output (eg yours) and very few have HDMI-ARC.

Your description does not make it clear how you are even connecting a Play:1 to any of this gear, I assume it is Airplay, which is likely to be out of sync with the video anyway.

i would recommend returning the Play:1 to avoid further frustration.

They are connected via Airplay aka wirelessly. Actually the audio sync with video/live TV streams is perfectly fine. And airplay devices, aka the Sonos Play gen 2, are Airplay 2 compatible so I don’t think there should be issues. Especially with Sonos which is typically rock solid.

Hi @Bermannyc 

Are you still experiencing these issues?

I’ll address your issues one at a time:

1. Apple AirPlay is similar to Casting, which is to say it’s for media sharing only. Apple doesn’t pass the system sounds to the speaker as they are not part of an encoded media stream. There’s a page on the Apple website explaining that AirPlay is for “watching a film or listening to music with your Apple TV” here: https://support.apple.com/HT202809. They are not being general - they are actually being somewhat specific.
2. I recommend you switch your WiFi router off for at least 30 seconds, switch back on and wait a few minutes for WiFi to return, this is called a “power cycle”. This power cycle will refresh the router’s ability to maintain its connections between devices which is quite important, especially for AirPlay and for Sonos players. You may need to repeat this several times a year as a matter of course, especially if your router was supplied for free by your Internet Service Provider. Do this regularly at opportune times even if you don’t experience issues. If you continue to have issues with volume and connection despite trying this, please get in touch with our technical support team as there could be WiFi interference - Reduce Wireless Interference - or other problems which they will be able to identify and sort out with you.
3. See point 1 - your game’s sound is not part of an encoded media stream, so it is not shared with other devices.

A recommended setup for your requirements would be to connect a Sonos Beam to a HDMI-ARC (rare on projectors) socket or an optical output. You could then experience stereo sound for any input providing a compatible audio stream - this would include system sounds and games (you will only get surround sound from a game if that game or the computer’s sound device will encode the sound into Dolby Digital) - like Dolby Digital or PCM stereo and at a later date you could also use your existing Sonos One and an additional Sonos One SL as surrounds for the Sonos Beam. A Sonos Sub could also be added for full 5.1 sound 

Hi Cory.

Thanks for the responses. The game audio is disappointing since I was able to do all those things via bluetooth. So the Mac OS only passes the system sounds though bluetooth not AirPlay?

The main question I have now is why can’t the Sonos be selected as the default audio device? Every day we use the projector (it’s our main TV) we have to select it. Sometimes several times a day.

Hi @Bermannyc 

Just as with what is outputted from an Apple device to various destinations, default speaker selection would be something that only Apple could address, as only Apple devices/software broadcast AirPlay and AirPlay is their propriety technology. This is basically why we recommend direct connections (HDMI or optical) for non-audio-only sources, as we can then guarantee your experience.

Apple will be much more likely to address these issues with increased customer demand, so I recommend you get in touch with their technical support, or visit their forums.

D*** you Apple!

*Moderator Note: Modified in accordance with the community guidelines.*

Only HomePods can be selected as the default audio device.

Right of course Apple makes only their devices available for that. Makes sense.