That being said I love mine to death, it's tons of fun to mess with and abuse. I set out to see if modern effects could give a little more life to it and was a little surprised, so I thought I'd share it with you. I know it's not great but hopefully its enough to inspire others to dust off their old keyboards and see what they're capable of producing with a little help from modern processing.Have a listen here:
http://aeron.uni.cc/music/casiotone.ogg
All the sounds were generated directly from the ct's line. I didn't limit myself in the effects department, and thus most of it's been mutated quite a bit. Interestingly, I created my own "tone" on accident when I was bending the circuits, you might be able to pick it out from the intro.
Enjoy!