Again, what fun. I looked through some of these, and then I went to look at two of my favourite radio programs. This American Life and Prairie Home Companion and found that I can download both of these as podcasts. Then (I am reliably informed by my resident computer guru) that I can load them on to my mp3 player and listen to them. There are lots of great radio shows out there, I was aware that I could listen to podcasts (John Faine keeps on telling me), but I didn't know it was actually so easy.
I will certainly book mark the podcast sites, and use them to find information about particular authors. Should come in handy for book talks!