I download midi songs, arrange them, copy them to floppy, then load from floppy to KN7. Now I have an SD writer, and I want to do the same with the SD card. I copy midis to the SD card from my computer, but can't figure out how to load them from the SD to the KN7. At the the KN7, I can't see the files on the SD card. Is using a floppy disk the only way to load midi songs to the KN7?