I read that "it includes a high resolution STEREO layer." So poke around to see if that works.
https://www.google.com/search?q=ps3+doesn%27t+play+blu+ray+5.1+audio+hdmi&ie=utf-8&oe=utf-8 kicks the old 5.1 issues around but try it over optical next.
Strange problem...neither if my 2 receivers can play the blu Ray version of the Allmans Fillmore disks. I have a Denon and Pioneer receiver both connected via hdmi to Denon multi disk payers. Strange thing is CDs DVDs and other blu Rays play fine. And the players show that the disks are playing....just no sound from the receivers. I tried playing them through a PlayStation 3 connected to the Pioneer but still no sound. Think it's the disks? Or a setting I'm missing. I'm stumped!