Let's try this again.
For JRiver stereo playback I seem to have the following options:
* TOSLink or COAX to pre-pro (Coax doesn't seem very popular now but an option until I get a USB DAC). I have read concerns about TOSLink but a suggestion for TOSLink is below.
I used the Toslink connection in my review (of Xonar) because I was suspicious of the switching power supply possibly injecting RF noise into the common ground shared by the DAC when it was connected by coax. I therefore used a high-quality Toslink to make sure that the grounds were isolated.
John Atkinson - Editor, Stereophile
Here is a review of the Xonar card SPDIF w/JRiver and 4 settings:
The Xonar card would be great for analog recording (I have thousands of records) and while the DAC is good for a card I don't think it will match the DAC I ultimately choose nor do I want to keep using 8 cables so I'm considering it for Analog to Digital conversion and as a digital coax transport..
* HDMI to Oppo 103 HDMI input and OPPO analog out to pre/pro in 8-CH analog mode (at the moment I don't have an HDMI pre/pro (plan to get XMC-1 w/HDMI & USB DAC. I didn't think JRiver used HDMI but I have found references to the contrary...folks are doing it for not just MC but stereo.
* USB DAC (a future for me I think...if not in pre/pro then stand alone)
* I do want to play DSD and other high rez files so up to 24/96 is a minimum but 192 is preferred. MC DSD needs a good processor
* consider avoiding the traditional switching power supply and getting a linear power supply such as: http://www.mini-box.com/picoPSU-150-XT-102-power-kit
used in the ZUMA server I referenced
* Haswell is said to provide enough video capability for 1080p video playback (Bluray playback & ripped BD & HD-DVD playback). What benefit would a video card provide if I'm not playing games?
* Which processor? Is this a good choice or overkill?
Intel Core i7-4770K 3.5GHz Quad-Core Processor