Sorry for the late reply, I was busy for most of the day with real life stuff.
I checked the code to see if I could find what caused the "infinite game bug", and I think I found it. The fixed version should be uploaded soon.
About the sound, the game has a pause menu that can be entered by pressing the "escape" key or the right mouse button. There should be a button for muting/unmuting there. The game stores the sound configuration on a file, maybe some paranormal activity messed with the data in said file and changed the sound value to "muted". Try checking the button, it should have the same look as in this image if the sound is active. If not, press it and see if that fixes the sound problem.
