Sorry, this will take a while. I can't force the bug to happen, and it doesn't happen every time I play. But... It does affect all sounds, and when I said suddenly mutes it means when I look at my player again, there is no more sound, not even when I go to my incredibly loud workshop. I'll update you when I find out more
OK thanks. I'm trying to work out the exact point at which the sound stops. When you say "look at my player again" do you mean
* you're coming out of Free Cam mode by pressing C (and the camera jumps back to the player)
* you're recentering on the player by pressing X
* you're manually panning back to where the player is using WASD/Mouse