Dolby Digital is 48KHz, I don't think it supports higher (Im too lazy to look it up but Im pretty sure).
If your card supports 192kHz, than LPCM and HD audio formats on bluray and high samplerate flacs should play at their respective sample rates.
Can you list your settings in DSP studio and in audio playback options?
I think if you're using directsound in audio playback options Windows mixes everything back to 48kHz (I think the default configured in Windows devices).
Sorry for not giving a more elaborate reply, I'm tired .
Sorry not to reply sooner as I got put on Thankgiving KP duty. You are correct about Dolby, it tops out at 48 kHz as I researched it since the last post.
My card does support 192 kHz and I changed it to that and played Fleetwood Mac's "Rumors" album which is at 192 kHz. Both the internal # on the DSP Settings screen and the Receiver all line up to the 192 kHz.
So this has made this research all very worthwhile.
As for the BD that started it all, Darkside of the Moon in 5.1 surround sound at 96 KHz this does not seem to work on J River. Either I can get the 96 kHz or the 5.1 but not both. I was able to get the 5.1 at 48 kHz using TMT 5 and that sounds better than the 96 KHz 2 channel in my opinion. When I play the BD from my BD player, I can get the 5.1 and 96 KHz fine, so I don't think the problem is with the receiver. However I have to stare at a black screen as there are no visual on the BD, so the J River + TMT 5 Combo at 5.1 Dolby at 48 kHz is still my favorite. My other music files do not offer 5.1 so J River with the sound card tweaked form 48 kHz to 192 kHz is now the best.
My settings are as follows:
Audio Output: Direct Sound, the only option that has worked so far.
Output Mode Settings: Primary Sound Driver which is the Nvidia Card and for Channels: Default Channels, All Channels and Hardware Direct do not work on the 5.1, the error message states it needs to be 2 channels only for those options.
All Sample rates are set to "No Change" I set the 48 KHz to 192 KHz to see if that made any difference and it did not.
Bit depth: Source bitdepth
Channels: 5.1 channels
Output surround sound as Dolby digital is unchecked, this pushes everything back to 48kHz although it creates a robust sound.
Mixing is set to No upmixing or downmixing
The subwoofer is unselectable but shows"JRSS Subwoofer"
All other DSP Studio options such as "Volume Leveling" are unchecked.
Am I missing any other possible settings?
Thanks again for the assistance.