i have burned 2 games and they both bring me to the music player (DC)

I have just got a dreacast. I have burned 2 games and niether of them work. I have read tons of info and done everything they say but still nothing. the DC just asks for a game. I have made a boot disk and it loads the music cd player on the DC. I have burned the games in mode 1, on 80 minute cds and used disk juggler 3.0. so if anyone could tell me anything to help me i would love to here it. Thanks