Apparently a couple of years ago Data Stream was made by an outfit named "Friendly CD-Tek":
http://www.burnup.cx/akiba/20010505/#MFRI80
I don't know if that is still true, nor do I know anything about "Friendly CD-Tek" other than it is (was?) a Taiwanese outfit that got busted for piracy at least once. I guess there wasn't enough profit in just making blank CD-Rs...
cfitz