DSP: L/R to L+R L-R Is there a way using MiniDSP I can get 2 outputs L+R and L-R from an L/R input? Input 1 (L)-\ / L+R Output 1 ........-DSP MAGIC- Input 2 (R)-/ \ L-R Output 2 The Rear/Center Channel plugin only looks like I can do either L-R OR L=R...