I've been using Express Scribe for about 6 months now with great success. A few days ago, however, I deleted the CD Audio Files that I had on it and attempted to load another CD. Suddenly it tells me that it cannot find the CD-Rom. I've tried everything that help suggests, I've spoken to Martel Electronics, and I've searched a couple of MT forums without success. I've changed nothing else on my computer. Please help. 