I am somewhat confused and please forgive my ignorance but would someone please clarify a few things for me:
1)If I use a Bluray player that decodes all the new HD audio codecs in the player and I send the audio out via PCM using the HD621 and connect it to my 861v4 with 3xSPDIF via the IE42 card I will be able to play all the new HD audio formats--Correct?
2)What happens if I insert a SD DVD into my Bluray player-- will I need to go into the menu and bitstream the audio out to hear DD or DTS OR will it play with the Bluray player set to decode the audio and sending the audio out PCM? (since it is being stated in above posts that the HD621 doesn't pass through plain DD and DTS).
3)What about Direct TV -- I have an HD receiver with a digital coax output and an optical output-- If I connect it to the HD621 using HDMI only will it output 5.1 audio also in DD ( again the pass through issue) or does it need to be connected with the optical output or coax output instead?
4)Do all the above (1,2 and 3)get upsampled or only number 1 or non of the above.
Thanks Joe

My gear: Trinnov CI, 271, 8000.1(SEs), 7200.1 HC (SE), 320s, 3200s, Seaton F18 subs, MS200 (2nd zone), 218, 210.
Other: JVC RS-4100 projector, Lumagen Pro Radiance, Panamorph DCR anamorphic lens, Stewart G4 130 screen, Kaleidescape Strato K, Rvolution 4K player and Zapitti NAS, Oppo BDP-203,Roon Nucleus