I have ripped the new Elton John "Diamonds" Atmos files from a Blu Ray disk using MKV and DVD Audio Extractor. This always works well for 5.1 Blu Ray disks but I haven't been able to get my JRiver based music server to fold down (down mix) the resulting 8 channels to 5.1. Everything sounds good but those two extra channels are just missing. Does anyone have advice for me on how to ask JRiver to do this? BTW, I am going directly out of my Mac mini NAS via USB into an Exasound E38 DAC - then directly out of that to the amplifier (no pre pro). Thanks for any help!