Funny, I was going to suggest he avoid doing a DVD for exactly the same reason — to avoid the complexity.
Export your compilation to a QuickTime movie. Pull it up in QuickTime, Cmd-L to set it to loop, Cmd_F to go full screen. Done.
Just think of all the additional steps he’d need to go through to compress for DVD, pull the file into iDVD or DSP, futz with the menu, set the loop point, test the setup, burn the DVD, hope he doesn’t create a coaster, yada yada yada.