terror

I have recently got a sony vaio mp3 player (VGF-AP1L).. to put music on this it requires me to use sonicstage, I got sonicstage 2.1 with it which i have installed, but every time I try put any audio files in to the libary i get an error message. I have tryed every way to add audio it will alow and this same message is displayed throughout. Does anybody know how to fix this please?

I have recently got a sony vaio mp3 player (VGF-AP1L).. to put music on this it requires me to use sonicstage, I got sonicstage 2.1 with it which i have installed, but every time I try put any audio files in to the libary i get an error message. I have tryed every way to add audio it will alow and this same message is displayed throughout. Does anybody know how to fix this please? ps. Im using windows 2000.