OK. I think I just answered my own question.
http://en.wikipedia.org/wiki/Universal_Disk_Format
It looks as if v2.5 is as far as it goes with WinXP. Windows Vista and Windows 7 support v2.6.
In this case I can still burn the Iso image using Imageburn. Since I have five ISO images under 4 gigs and all containing 24/96 DTS-HD MA 5.1 music I was going to rip all tracks and combine them to a single blu-ray using Cirlinca HD Audio solo ultra. Guess I'll have to settle burning each iso seperately. Any ideas please let me know.