Okay ive read all teh walkthroughs and even some from the book walkthrough ... but i think my cd or whatever is messed up

I go into specters castle but all i get is a black screen i hear voices overhead and i know there from previous ((badley voiced)) scenes between spike specter natilie proff. or whatever .... after the voice quit which is about 15 min or so ... it dosent come back on .... the PS system is still on but there is no picture ...

if you know how i can fix this or if i just have to get rid of it or whatever let me know .... email me preferabley .... it would help if im not online here for a few days