Kinsella on Liberty Podcast, Episode 362.
I was a guest on California Gold #6, with guest host Matthew Sands. From the shownotes:
Stephan and Matt covered a wide variety of libertarian themes, including property rights, self-ownership, the Non-Aggression Principle, intellectual property, Hoppean Argumentation Ethics, Georgism, Objectivism, utilitarianism, deontology and much more. Stephan was hosted by Matthew Sands of the Nation of Sanity project (http://www.nationsofsanity.com/), which aims to promote the Non-Aggression Principle as a universal peace agreement, hosting for California Gold for the first time.