Got the software installed on another computer. I did get a disc to burn tonight using 24/96 flacs.
The software seems to build an image file first, then goes through a burn process. Each time, you get progress indicated with the pie chart. So there seems to be two distinct steps.
I just need something now that I can play the DVD-A on. The DVD player at home doesn't like it, but an iMac at least recognizes the disc, though it reports it as being an unsupported disc type. I will need to hook up a DVD player capable of playing DVD-A.
P.S. forgot to mention... I emailed their tech support this week and they indicated that it should work with 24/96 flac files. If it's not working for you they might want to dig into the problem to find out why.