Tried to burn a long playlist for an audiobook onto a data dvd for a friend. But while the output size said 7.5 gig which would mean 2 disc of dvd size, it actually said 13 disc. And when if finished burning only a small section of the dvd was burned instead of a full dvds worth. So how do I burn data dvds in musicbee and use the whole disc and dnot a cd worth of space on the dvd?