Thanks to the many good posts on installing the LMS UPnPBridge, I was able to get Roon working with my NDX. Unfortunately, as some forum members noted, playback was limited to 96kHz files and I had to configured the Roon DSP sample rate conversion to down-sample higher frequency files.
I was able to resolve this limitation today. The fix was to significantly boost the size of the bridge’s buffers. I am sure these settings can be optimized, but the following are the buffer sizes in config.xml that get 192kHz music working without down-sampling for me.
Hope this is helpful,