Wondering if anyone can help me? I am using a sky+ HD box connected to my Pioneer SC-LX73 receiver connected via HDMI. When watching something that has surround sound the centre speaker is not working. The receiver just says stereo and I have direct selected on the amp, is this correct? Or should i be selecting one of the many Dolby/THX options? The setup on the sky box only allows you to select "DD" on the audio out (OPTICAL) option. Any help appreciated. Finally have this working on a PC connected via HDMI should this also be set to Direct? Can someone explain to a nube what all these settings are for, I always assumed direct was the one to use as you get the original audio. The receiver never changes to Dolby digital or DTS always says "stereo" thanks.