Prototype 3 - Slight mods

Mods: pitched down the audio for music and jump (also crash by default); made the audio feel slightly less hectic / anxious. Also added an extra condition line so that if the player inadvertently jumps onto or into the log (hits the obstacle while in the air) the running particle effect stops (without this added condition to the if statement, the particle effects would continue on the player after they died from hitting the obstacle while in the air).