HOTFIX: Audio fixes and some other things. — Metal Heads Steam update #1085925

Hi everyone, Once again, I have been fairly quiet on the update front, but that's because I've been fairly busy working on some exciting things behind the scenes...which I don't want to give away just yet. Despite this, I played Metal Heads with a friend the other day and ran into some bugs that I just couldn't let go, so here's a little hotfix for you all :) FIXES: - Scoreboard removed from Deadly Disco (I have no idea why I added a scoreboard in the first place). This should eliminate some confusion. - Changed the tutorial videos to not be precached. I believe this may have been causing stuttering/chopping tutorial videos, but needs more testing. - Removed "CANNOT MODIFY THIS TILE" text when viewing items in the board game mode. - Removed shaded background images in the board game UI when those images were not supposed to be shown, this isn't a major problem, but when spectating for ex...