When it comes to shorter podcasts regarding the publishing industry of science fiction and fantasy, one perfect place to find these is Fictional Frontiers, hosted by Sohaib Awan.
Most of Sohaib's podcasts are fifteen minutes long, and jam-packed full of knowledge as he interviews such SF/F heavy-weights as Timothy Zahn, Brad Meltzer, Terry Brooks, Tara Bennett, James Berardinelli, China Mieville, Howard Andrew Jones, and many more.
One plus for me is that Sohaib serves up many of those who are working in the Star Wars Expanded Universe. Very few podcasts I listen to ever do this.
Be sure to add Fictional Frontiers to your podcast feed.
You'll be glad you did.