Does this built in utility finalize the CD after it finishes burning it or leave it open for further burning?
it does not finalize it, as you can simply drag & drop files and treat it like a floppy! I'v never used the inbuilt feature so I'm not sure if there is a option to finalize the CD.
After you complete the burning process it closes the CD. No option to keep open that I know of, would be very surprised if there was
Actually, it leaves it open. I did a bit of dinkin' around with the utility and ended up burning a number of files in various sessions to the same CD. After the first burn, however, you are never again prompted to open a folder to burn to again (that is, on a CD that has a session on it already, not a blank). Instead you have to use the Right Click and Send To option, or you can drop and drag stuff to the drive as well, but after that first burn you don't get the option to open a folder to burn to. Now I wonder if you can ever close the disk out...