These are not copy protected at all. Same format, same process of adding to my iTunes library. Downloaded from site that I purchased from and added to ITunes. They will show from the ITunes library but when importing to the Stagetraxx they are not visible to import.
I can copy and paste from ITunes and add them to Google Drive or ICloud Drive and they can be imported with no problem. Just wonder why they are not visible to Stagetraxx when searching direct from my ITunes library. At least I know I can add them using a work around.