Has anyone know how to get XPD-15 form the internet?

I've lost my XPD-15 disk last years and couldn't find in any music shop nere my place. If you know hoe to get it and how to save it into the disket.
please help me.I've tried so many time but never succeed.
Or send me your e-mail to teerachai@one.net.au
Many Thanks.