After seeing this post, I got my Link out and tried it. I initially didn't have sound either, but this comment on the bad site helped me resolve it. TLDR: re-installing the steam speaker driver thing.

https://www.reddit.com/r/OculusQuest/comments/18852nj/comment/kbj5cwc/

[–] Ozymandias88@lemmy.world 9 points 11 months ago (1 children)

Sometimes my pc gets confused on which sound output it's supposed to use. Have you tried alt-tabbing out of the game on your pc and setting the sound output to the steam link?

[–] TheQuietCroc@lemmy.world 3 points 11 months ago

It's been some time so I don't remember what I tried. I'll give it another try some time.

[–] ricecake@sh.itjust.works 2 points 11 months ago

It's dumb, but sometimes windows refuses to acknowledge that audio can work if you don't have an audio device currently "active".

On my old computer I just plugged a headphone extender into the back and that fixed it, since it saw there was a connected audio device, even though there weren't even headphones attached.

I'm sure there was a better fix, but a cable on the back wasn't really bothersome.