John,
I appreciate your trying to help, but that seems a bit complicated for my computer abilities. I don't understand. It is a brand new Lenovo computer with windows 10. I bought and downloaded JRiver and it successfully downloaded my music files. I have purchased an HD music file, which plays, but won't transfer to my Pono, ripped a few CD's which show in the library, plays, but, again, won't tranfsfer to my Pono. The software recognizes the Pono device and the micro disc. What could it possibly be?