I have set up my PS3 to go through my Sony SS 1300 amp with a HDMI cable, then from the amp to the Panny with another HDMI, i have set my settings to LPCM as have been told that is the correct way to get HD sound, i have read on here to set to bitstream when using an optical cable, is this correct, bitstream via optical and LPCM via HDMI, it has got the latest firmware.