Does SD Card 1 work in your KN2600?
Seperately you must unzip those KN7000 files before they can be used in the KN2600. I would then load them into the KN7000 and then save them to SD Card 2 from the KN7000.
One other point. Is SD Card 2 suitable for use in Technics keyboards in other words max 2gb and not an SDHC card?