Many of the audio clips are of extremely poor quality. The author has the habit (as many of us do) of ssssshhing all her s's. This is why most studios place the foam over the mic. The recordings were obviously done in a non-studio enviornment nor with the door closed to the room in which she was recording. You can hear children in the background playing and in one of the clips the *passing Train* was so loud that it not only drowns out the audio, it was painful as well. Additionally, the author has absolutely no enthusiasm in her recordings. There just being read and not well.
What could have been an excellent vehicle to train with (and should be at $100!!) is utterly destroyed by the audio clips.
Until the revised edition (???) comes out please leave this book/CD-ROM on the shelf and your money in your pocket.
Prentice Hall should recall this product and fix the audio clips.