It stays constant between songs but not after restarting the game, just like you mentioned.
Is there a way to keep it constant after restarting the game?
Hi--there's no way to do that right now, but I do see how useful it would be if you're having this problem! We are working on a fix to these sound/BSOD issues. I wanted to make sure you knew there's an options button on the character selection screen so you can at least select no sounds from there before you go into the gameplay.