Also I have had some small amount of success, I have located a disk image of the midi sequencer/playbacker tool at Forum • Casio FZ-1 Optional Software?
I have converted it to HXC hfe image and it works in the FZ1, I have uploaded both the original image and the conversion to the files section.
So that means if we can get the disk images for the fade/loop optimizer tools, they can be used too