S.O.S...............I have a MZ-S1 with sonic stage stage 1.5. I've tried downloading Sonic Stage 3.1 but the computer states I need Window 2000 package 3 or higher. When I import mp3's from other websites such as Napster from my PC to an MD using Sonic Stage it states I need "CODEC" .....I AM ABOUT TO SELL MY MZ-S1 on Ebay if I can't listen to my music, PLEASE HELP, THANKS!!!!!