Not to be overly negative, but...
These _JtC_ mp3s are a great service, but frankly, they are of very poor quality. The readers very often don't understand what they're reading, and you have to try to interpret Talmage's meaning by mentally writing out what they read and then "rereading" it. Listening to these mp3s is an extended exercise in frustration; I speak from experience. But if you absolutely want to read _JtC_ and simply can't find time to read the text yourself, these mp3s are (somewhat) better than nothing.