Minor sound fixes

-Adjusted volume levels of some things that got drowned out by music.
-Changed default volume levels to Master: 10, Sound: 8, Music: 6.

btw, Stilt Fella's soundtrack is now available on Spotify!

https://open.spotify.com/album/7prZTya4e5FkfzOpAhtUcW?si=nOdiCrF2TgWi1ID8gkVHHQ&dl_branch=1