Is there a program out to change .cdi to a clone cd image?

[linux box]

no, but there are steps you can do. if you can use nero, you can get "cdi2nero" and make a nero image form cdi file, then burn with nero. if not, you can get cdmage, which allows you to extract files from cdi images, then make a bootable or non-bootable cd with whatever your prefered program is...