Ok. So I connected my PS3 to my TV via an HDMI and I have the Panasonic SC-BTT490 5.1 surround sound. Now I want to connect my PS3 with the surround sound via an optical audio cable. What settings should I use. I.E. bitstream or PCM. And any suggestions are welcome on any other settings or wiring. My TV and home theater both have the ARC HDMI.