Is it even possible to buy some type of HDMI input card, and then run an external source such as the HDMI audio output of a Blu Ray player into the PC, and have JRiver doing the decoding and then send it out of JRiver audio output?
This would allow me to use my Blu Ray player to run full 3D to the TV (video only) and then the second HDMI output of that unit to the HDMI input of the JRiver machine. Then have JRiver decode the DTS-MA or True-HD signals and send them out the JRiver audio output.
Has anyone come up with a solution for such a setup yet?
If the objective is playback and HiFi audio, disregarding cost, why can't you deal with this via hardware?
The amp I've got sucks in HDMI audio + video and passes out HDMI video (3D if I want it to but don't bother). It's not suited to surround sound but that's not what I was after (minimalist is my philosophy). If multi channel audio + video was my intent, I would have gone for a HiFi standard A/V Receiver. Not sure what else is out there but NAD have some offerings, e.g. T 187, that I'd expect would address your needs. You can do the research. I don't intend to act as a salesman. The only thing is that this path would cut MC out of the process.
The other option is to rip the media you've got, load it into MC and then output it to a suitable piece of HiFi standard A/V receiving hardware to do the signal splitting and process the audio (DAC + Amp). Refer previous paragraph for guidance.
Stripping off the HDCP makes sense if you're recording but you don't need to, do you? Why not rip the BD to MC and avoid all the messing about?