I noticed today that several of my mp3 files have a strange hissing and distortion to them that was not present until very recently. In certain songs it causes a slight, barely noticable hiss, and in others makes it absolutely unlistenable. The only thing I can attribute this to is the fact that earlier today a fuse was blown in my house. There is also a lightning storm going on right now. I was wondering if these could be the causes of the problem, if there are any other potential causes, and if there is any solution. thanks.