When I want to burn a data CD on iTunes it makes this strange clicking noise and doesn't end up burning the DVDRW. I tried using the regular drag and drop onto the CDRW burning folder itself and it still makes this strange clicking sound. I'm using sony DVDRW and they worked fine when I first got them then all of a sudden it's doing this. I've tried another brand of disk (tdk) and it's still making the same noise...