[beagleboard] Getting Audio signals off a bluray player with 7.1 analogue out)

Does anyone know whether you can strip HD audio off a bluray player
with 7.1 analogue outs?

I want to try and get the audio as a digital feed (so pick it off just
before the DACs) in the player. What format is the signal? Is it I2S?

I need 8 channels of AES/EBU input for my processor from off of the
bluray feed. Do I need to convert the bluray (I2S??) into AES/EBU?

Any help would be much appreciated.