SWITCH is a great program for converting music. Ted, I have to ask the question, why do you want to take an .mp3 file and make it a .wav? As I understand it, once a file is compressed, as in this case, to an .mp3 you cannot bring back the dynamics of a .wav file. This is comparable to taking a .jpg image and making it a .tiff. As you probably know, a .jpg image is highly compressed compared to a .tiff. Perhaps someone may know more than I do and explain this better.
Mark