Sony BDP - S550 sound problem

[teigas]

I am running my Sony BDP S550 with an Benq w5000, and get great pictures.

But i got a problem with the sound

I got it hooked up with a Denon 3806, wich can no decode the new audio formates.

But i want the player to do so, and have a HDMI cabel inbetween the player and reciver.

I get the multichanel on the reciver, wich should indicate that its ok, and that the player is decoding.

But when i played around with 2 settings problems happend:

I tryed both mix and direct on batman the dark knight, on the beginning of chapter one, when the guy jacks of the alarm boxes padlock. When i have it on direct, i dont hear anything ther, but on mix i hear it very good..

I also played around with the settings on 48Khz/96KHZ PCM, , and put it to 96, can this have anything to do with not hearing the alarm box padlock break, in direct mode?

Also got the HDMI AUdio to auto, not 2 ch.

What is wrong her? Please help!