Problem with loading the game

[roug3l3ad3r]

To cut to the chase, I try to load my saved game and a window comes that says there is a disc compression error. I think this is because I tried to rip Ministry: Bloodlines (the song that plays in club confession) onto my freinds ipod. How do you recrompress the file? side note: Before anybody advises me to do a system restore know that I have the function turned off and have no available restore points. I do this because system restore autamatically takes up part of your hard drive. Even 1% is too much on a large hard drive.