Sound Is too loud

I love this game so much! I have been playing this game for 3 or 4 years. There is a couple things that annoy me, why is the stonecutter in the game but we cant use it? (Maybe there is a way but I dont know it.) Two, why is the thunder and rain so loud? I have hearing loss and I can still hear it loudly. Please fix this I would appreciate it. : )

MJadventure12 about Minecraft: Pocket Edition, v1.1.5