Would an EXT Cd Drive work here? I'm not even sure if they still make those but either that or copy from another computer to a regular sized disc. I know it sucks but you can't really complain because everyone knows slide drives dont take these, car cd players and such.
If you only have a Mac then try to find a cheap usb ext CD-Rom, they can't cost much, if they are even available. I wish they would make up a disc for those to fit in but I doubt that will happen, is it possible for you to plug the cam corder into the Mac and read the disc?