You can listen to a long interview with Raymond Benson, who wrote the James Bond books for many years, and author Robert Goldsborough, who wrote the Nero Wolfe books after Rex Stout passed away. You can find it at:
Go to the middle of the page, find the section called "Writers Webcast with Chris Angelos" and download the link dated February 28, which is the interview. Bob is first, and Raymond comes on. You'll learn a lot about writing and the tie-in biz.