I happened to turn on my radio last night to ABC Local Radio, 936 ABC Hobart, on the Sunday Nights (religion and spirituality program) just after the midnight news, and as I did so, the presenter, John Cleary introduced a program which aired on a sister station, ABC Radio National on 14 May 2006 on the program The Spirit of Things. The program was of course about Lewis and Narnia (see the subject title of the thread), and it included interviews with Doug Gresham, Robert & Linda Banks (an Australian couple who've written Bible study guides to Narnia and other things) and Christopher Mitchell (Director of the Marion E. Wade Center at Wheaton College).
Anyway...I was hoping to download the program, as I was able to download a program during '06 with an interview of Doug on one of the ABC radio stations, but unfortunately, as yet, I can't see that I may be able to do that. However, I am able to give the url with the transcript. I hope you'll find this as interesting as I did: