EMI: Recalculate volume and balance for positioned sounds when the setup changes. Fixes #996
EMI: Adjust attenuation of sounds to match the original game better.
GRIM/EMI: Do not do 3D positioning for voices.
EMI: Fixed sound panning.
EMI: Remap volumes from the range 0-100 to the range 0-255 for the audio mixer.
EMI: Fixed implementation of UpdateSoundPosition.
Merge pull request #1007 from Akz-/emi-sound-position

GRIM/EMI: Positional sound tweaks