Thanks for the responses. I've gotten J-River to work with the NAD. There was a playback mode section at the bottom of a file type window I missed that was set to "automatic". Strange location IMO.Even after giving up the Jriver engineers found the solution.
SQ really jumped using the Jriver audio engine. I need to AB with some audiophile ears in the next week to compare with the stellar sound quality of the HDMI Oppo NAD combo. It might be a wash and that's a good thing.
I was really disapointed using the MAC as a music server. Using LiTunes is simply nightmarish when you're trying to maintain your organized libraries. It's funky behavior toasted my MP4 library more than once. The behavior of the audio software programs was so bad I might assume this brand new Macbook pro has bad memory. It was/is Windows 3.0-like. So I can't pretend Amara and Audionivana and the rest is bad software, but it wouldn't roll on my Mac with 8 gigs.
With MC17 on a PC with 4 gigs - no hiccups with current setup.