Placeholder Music

I've been looking for good SFX and BGM, and while I am talking with a friend of mine about making something more custom for Danger World, I have added the first round of placeholder sounds to the game. Now, as you attack, receive damage, or just navigate the world, you'll hear sounds and background music to accompany you. I've also added the menu options for adjusting the volume of the SFX and BGM independently of each other.