Interesting game idea and great visuals. I think I had a sound bug where I almost couldn't hear anything despite setting the volume to max. Anyway, good job!
Can you please share what is your operation system and browser? Unfortunately I never had any sound issues while testing and you are the first one who reports this.
I'm using Windows 11 with Google Chrome (current version). Didn't have issues with other games so far. However, my internet connection is not that good today, so maybe that's the problem.