INT 18 - Gravis Ultra Sound YEA_GUS.EXE - RESTART VOICE                         
	AX = 690Dh
	BX = voice
	CX = sample type (0 = 8-bit, 1 = 16-bit)
	DX = looping type (0 = none, 1 = forward, 2 = back and forth)
Return: CX = balance value
SeeAlso: AX=6907h,AX=6908h