If the Blu Ray player is connected to the TV by a HDMI cable is it best to connect the BDP to the amp via the Audio Outs or the TV to the amp via its Audio Outs.
I sometimes have my Sony connected to my amp and TV as described and it works fine. Alternatively you could try BDP to TV by hdmi and then analogue stereo from TV to amp and let the TV handle the digital conversion etc of the sound.