[saltman]

He's not describing a rewritable. I don't know how to explain this with the correct terms but I will give it a shot. You can take a standard dvd or cd and "some" burning software will allow you to burn a disc that you can read in various players. But you can leave the session open where you can add more info. to the end at a later date. I assume it adds info. to the FAT or however it indexes files at the same time. The key is it has to be the same software to add to it. The difference in this and a rewritable is you can't rewrite over previously burnt info. I was always scared of incompatibility and don't use this feature frequently.