This is a comments thread for the following album: https://downloads.khinsider.com/game-soundtracks/album/ergo-proxy-original-soundtrack-opus-01
Do you refer to the noise and white little spots over the covers? The thing is, there are some other big "spots" like liquid dripped on them but I think that effect is intentional on the art. Anyway, I actually remastered the covers a while back. I dont consider myself too experienced when it comes to picture editing but I did clean the main front covers up and tried to "digitalize" them properly. I used Paint.NET and multiple plugins and also upsampled them via AI.The anime was brilliant, the OSTs also.
The cover photos however, were taken from stained covers. No complains there, though, to have something is rather better than having nothing!