Yep, still having the same problem in 1.0.7.
I just downloaded this for the first time. I fired up the demo world and cannot hear any world sounds. I have audio when the game starts including music. Menu sounds work as well. Music continues to work in the world, but I can't hear anything else. No animal sounds, no digging sounds, nothing. Just music.
It appears I have 1.0.5 for the Windows 10 edition.
I just got the game (Windows 10 Bedrock) about a week ago and can confirm I get the same thing for the world I created. It didn't first start to be an issue until a few days ago oddly.