Hi,
They do sound good. You have to rename the file extention from. *.mid to *.kar. If you read the main page he explains it. After unzipping right click on the file, then click rename and delete the .mid and rename it (what ever the song tiltle is).kar, as long as the .kar is at the end your file, the keyboard will know what type of file to use.
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I don't steer the ship... I bail out the water...