Thank you!
The game freezing sounds like an OpenFL bug that was discovered and resolved a few days after the jam, so unfortunately out of my control. The lack of sounds does indeed sound very strange, maybe you accidentally muted it? By default, HaxeFlixel projects allow changing volume by pressing + and - to increase/decrease and 0 to mute. The volume is then saved and loaded on future game reloads.
We're working on a post-jam remake of the game that'll present our initial idea as polished as we wanted it to be. Without the strange bugs, hopefully.😅