Hi Ted
If I understand you correctly you have converted a piece of your sequenced playing to MP3 format (you don't say how) and then used SD Jukebox software to transfer it to your computer.
SD Jukebox exists to convert MP3s etc into another type of format which means that they can be played from an SD Card in your KN7000 using the buttons embedded in the silver area where you insert the SD Card.
Is this new territory for you, Ted?
Rog