I've recently bought a Sony BDP-S480 Blu Ray player and connected to my Pioneer SC-LX75 Receiver but I'm not seeing what I expected to see on the Pioneers display in terms of the audio signal. The only connection I have made between the two is via HDMI and I believe I have all the settings correct, but the Pioneers display is just showing PCM. I've tried using the HDMI Select on the remote but still not seeing any expected DTS or DD light up. Any suggestions please.