There IS a tiny bit of general information about remastering, decoding and MQA on the Nielsen Piano Music I downloaded at 2L a few days ago. Of course, me not having Sooloos or Roon, means that I don't have an clue how to play and compare.
Probably best to open up a new thread, then I'm sure someone will help. It's also worth reviewing other threads on computer music playback on this forum and you'll need to list your existing equipment too. In short, if you have a computer and a USB capable DAC it should be possible to get you up and running very quickly.