OK, then I must be trying to create a bigger image file than my computer's hard drivehas room to compile and that's causing it not to play. I'll just try a smaller compilation of material to ensure that the computer has enough scratch space as it compiles the image. Hopefully that will work. I'm still trying to figure out if any of my players will deal with DVD-A. My Philips deck (DVP 642) seems to accurately identify the disc as a DVD Audio disc, but then kicks it out. I don't know if it's supposed to play DVD-A or not. On the other hand, WinDVD is supposed to work with DVD-A discs and it does not even seem to recognize the disc I've burned.
So, I still have the question about how much extra room you need on a hard drive in order to successfully compile a full DVD-A. I'd appreciate any hints that you may have.