I have a file server and over time random MP3s get these annoying scratches in them. No idea how this is happen but conintues to happen, I have had different hard drives and computers over the course of 4 years. For an example of what this sounds like you can download an example from http://18.104.22.168/dog.mp3
you can hear it in random areas throughout the mp3, for example 2:14 into the song. What is causing these scratches in the mp3? I assume they are not fixable.