WHATS TO DO????

I HAVE WINDOWS 2GPRO I TRIED TO BURN MP3S TO A CD THEN PLAY IN MY MP3 PLAYER I HAD NO PROBLEM /W/ WIN 98 BUT 2G WONT PLAY AN WONT EVEN PLAY IN MY CD ROM ON THE COMPUTER ???IS THERE SOMETHING I DONE WRONG ??HOW CAN I CORRECT THIS WILE KEEPING 2G W/O GOING BACK TO 98??? THANKS