Help w/popful mail

Ok, I am trying to get popful mail to work on my emulator, I burn it, I get the mp3's, I look on the gens page of compatibility. It says popful mail is perfectly playable if you use perfect syncro. What the heck is that, could someone tell me where to find this.

No perfect sync in in the cpu options when you load the sega cd. ALSO NOTE, AFTER popful mail loads, turn the option OFF. I mean it works, you only need PS when it boots. Then turn it off for non skip gameplay =D