Having some fun getting surround sound out of my current set up - anyone know why? I have the following.. . LG 50PZ550T (from currys) Toshiba BDX3200 Pioneer AV DV55 home cinema system. I have a proper HDMI cable into the TV the optical out of the TV into the back of the Pioneer. Though this i get sound but it isnt 5.1! I also have an old 5m RCA from Toshiba Coax output - Pioneer coax input as far as i can understand but i get nothing from this. I have tried 3 different new blue-ray DVDs and a few movies ive got on my hard drive. Any ideas ?