Theres nothing at all magical about EZ CD except that the letters EZ seem to appeal to the same people who line up at bookstores with a big yellow ".XXX FOR DUMMIES" in their hands..
EZ CD creator just doesnt work with every burner.. It sure doesnt work with mine..
I've burned practically everything with CDRWIN using the cue maker app.. I generally do an iso2raw on the first track, and convert the mp3s to wav, then burn the thing RAW DAO..
Saturn, or even Sega CD for that matter, arent some magical format like DC (which is a screwed up multisession disc) or PSX (and all its subcode reads).. As far as the burning goes, its a straight forwared mixed mode iso9660 burn.. Data track, Audio tracks, close session, play..
On a few games, i've had problems after i burned DAO, namely Wonder 3 for Saturn, and Working Designs titles (Lunar, Vay) for the Sega CD.. Burning them TAO seemed to fix that.. I suspect these have their own CDDA code (ie, "play sectors xxxxx-yyyyy" rather than "loop track 8")... all i can say is if audio is skippy and fudge
ed up try burning TAO.. (Some games dont work in TAO either, ie; eternal champs for sega cd froze/music died).. The solution of course would be to find good full images of games (ie, bin/cues or cdis or similar) and to beat the #### out of anyone ripping iso/mp3.. but for the kids, its quantity over quality, so what'r'ya'gonna'do
Anyways, my point is, practically any burning program that allows you to follow an iso image up with wav files will do just fine to burn saturn/sega cd