Added a mutli-sound loader.
Object Based Design Planning
Filling createSound function.
Added playNew function to createSound.
Added fade function to sounds.
Added optional 3D panning to sounds.
Made gainNode public in sounds.
Added time parameter to play function for sounds.
Changing createSound to Sound, createSound still exists.
createSound has been changed to Sound. createSound will return new Sound.
Removed obsolete code.
Updated tests.