NoVaSpY

Just got a Sony MZ-N505 Type R player. I figured out how to put the player into LP2 mode, to get 160 minutes on a disk. But in SonicStage, it appears I only get the usual 74 minutes. So, my questions are, 1, do I need to make sure the tracks I want to put on a disk are in Sony's format, 2, do I need special disks (mine are just basic MD kind). I don't want to start loading in my CDs from scratch if I don't have to. I can't figure it out. I have the settings in Sonic Stage set to use LP2 but in the transfer window it says 74 Minutes.?? Am I doing something wrong? Any help would be appreciated, thanks.