How worried does the audio-book business (a $2 billion-a-year industry) need to be about the recent proliferation of downloadable audio books on Napster-like sites? “The question really is whether there is a demand for audio books in the MP3 format. If there is, publishing would be well advised to figure out a legal – and money-making – way to make audio books available online. Readers might be willing to pay for the convenience of easy downloading if such a site were made available to them.” – Inside.com