I haven't been around much due to illness. getting back into the swing of things.
Roger is correct, you can use the Technics software that came with the keyboard to do a backup.
You can also use KN-SDExplorer which backs up everything on the card, not just the Technics data. Backup and Restore works fully even in the demo version - KN-SDExplorer Website
Copying the files from your card to your PC also works. The autorun file is a windows file and is not relevant to your keyboard. It will not copy across because it is not supposed to do so. Just ignore it because I assure you that it is not relevant.