I put a CD in to import it into itunes and it sounds like a toy plane propeller. Very loud. You can hear it across the room. I put one in a second before that and it didn't sound like that. Then I took that one out and put another one in and I actually tried to play a song. It started playing but it also started sounding like a toy plane. What could be wrong? Will this mess up my cd some how? I took the cd out now and it doesn't seem to have any scratches or nicks on it like it was hitting anything.