This all seems a bit messy to me . Why not just send your songs to Cess Schrenks "Keso" site where they can be downloaded to a floppy disk or better still downloaded to your SD card using Fred Melinks SDExplorer program and then transfered direct to your KN7000 keyboard and played just as it was recorded on the KN7000 keyboard. Bingo.
Cess'es site a has over 600 songs on it and Freds program is great for tranfering and moving songs about. Both need our support as Technics players as do the people who take the time to submit their songs for us all to play
Regards
Brian