Onkyo tx-sr875 and Samsung 1200 question.

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I hope this has not been asked before but nothing poped up on searching for this info. Here is my set up, I have a Samsung bd-p1200 and a new Onkyo tx-sr875 receiver and was setting it up today. It is quite easy to set up but I ran into a couple of snags. It says it will output Dolby TrueHD, DTS-HD, and DTS-HDMA. So, I put the remastered Fifth Element in to the 1200 and chose Dolby TrueHD.....what setting do I put the Onkyo 875 on to know that it is playing the best sound, or am I just not understanding the concept.


As a side note, which disks are out or coming out in Blu that have these audio formats?

Thank you from an idiot.
Jason