I might be mistaken and somebody can chime in if I'm wrong, but if your Blu-ray disc player decodes the TrueHD and DTS-HD, then it should pass it through PCM to your receiver so it doesn't have to decode it.

2 = M60,4 = QS8's,1 = VP150,1 = EP350,1 = EP500
HK247
Optoma HD70,110" DIY screen
Xbox360 & PS3