Though you can sort of hear audio through the speakers on the headset itself, it'd be far better for spectators if you could hear audio through the phone too, especially when the person using the headset is wearing headphones.
While it is implemented, a quick fix is to use bluetooth receiver connected to your device.
You can have some Chinese product for 5⬠(or high quality for 200 â¬)
Then you delay the video recording of 400-1000 ms and you have a nice broadcast with audio.
https://github.com/EloiStree/CodeAndQuestsEveryday/issues/155#issuecomment-500104026
It would be really nice to be able to cast audio from my phone to my headset if I want a bit of background music.
If Oculus wanted to go above and beyond they could use the Spotify API so that the Oculus Companion app would be able to pause and play Spotify, while transmitting audio over bluetooth to the headset. This would allow for the user to pause, play and skip music from the Oculus Quest native menus without having to take the headset off.
Even just allowing the Quest to be used as a virtual bluetooth headset would be an awesome improvement, perhaps using AVRCP for media control and track retrieval.
Doesn't appear to be implemented - would be incredibly useful when a chromecast is not handy but you have a USB-C to HDMI adapter to share. Also for travelling to other places, it's not feasible or desirable to set up the chromecast.