Play Sound Effect [0x54]

Play Sound Effect (12 bytes)
BYTE cmd
BYTE mode (0x00=quiet, repeating, 0x01=single normally played sound effect)
BYTE[2] SoundModel
BYTE[2] unknown3 (speed/volume modifier? Line of sight stuff?)
BYTE[2] xLoc
BYTE[2] yLoc
BYTE[2] zLoc