a couple of weeks ago i bought a new cd, and put it in my cd player. on the second song it started fading out with this scratching noise (that kind of sounded like a vinyl record being scratched really badly) and then coming back in. I thought it was just the cd. Now, form time to time it does it on any cd. It's not regular though, at least not yet. Does anyone know what this could be? Do i maybe need to get a cleaner kit and clean the cd player?