How to get the 7.1 sound audio without HDMI?

[rlmbluray]

i just purchased a new Sharp Acquos Blu-ray player and want to cable it to my MC12 for the new audio formats, TrueHD, DTS-HD, DD+, etc.

The MC12 has no HDMI processing so I need to cable the MC12 through the digital coax, or the 5.1 analog inputs.

I am somewhat confused. How do I get the new audio formats to play through the Lexicon, and what is the best way to connect the Blu-ray player to the MC12 if I don't have HDMI?

If I use the 5.1 analog inputs on the MC12 do I process the Analog signals through the Logic 7 program on the MC12, and what about DTS.

If I go straight analog I will not get the advantages of my full speaker set up.

My setup has fronts, sides, rear speakers, as well as 3 subs?

How do I get the best performance from these new sound formats?

Thanks