someones gotta know the answer to this "the sims" question

[Sieferdeath]

I searched, and searched the forum, looking for an answer, the question is why doesnt my sims have any sound when i use the no cd crack!, but it had sound before! when i was using the no cd crack, 2 days later the sound is gone! i read somewhere that i might have to check my sims registry?? and make sure its looking for the sound at the right place...so..where do i look for that?? where is that?? how do i fix it?? any help would be cool