With perhaps a DVD-Menu program you could create an auto-exec file that launches a menu that would allow the user to choose to play the DVD or play the Flash…
Warning! You will have major cross-platform issues. Also, some PC’s will automatically try to launch the DVD player if it sees a Video TS folder on the disc…that could usurp the menu idea.
However, if you used eDVD from Sonic and the Mac’s DVD@ccess you could add a menu item that would launch the flash movie when clicked, therwise it would behave like a regular DVD, on a set top or in a PC.
Couple long threads in the Apple DVD Studio Pro forum about this subject…
Rich Rubasch
Tilt Media