I just discovered the Mises Institutes iTunes University store
They have the entire set of Human Action by Mises on audio book for free.
All their stuff is free.
Its a virtual cornucopia of economic goodness.
You need iTunes installed for these links to work.
Mises Storefront:
http://deimos3.apple.com/WebObjects/Core.woa/Browse/mises.org
Human Action by Mises:
http://deimos3.apple.com/WebObjects/Core.woa/Browse/mises.org.2907841150.02938497503
Thomas Woods, Robert Murphy, and Jeffery Tucker are a couple of my favorite speakers, so be sure to check out their work.
Particularly Murphy's lectures on Anarchism and the constitution.
The Evils of Intellectual Property:
http://deimos3.apple.com/WebObjects/Core.woa/Browse/mises.org.2941713691.02941713696.3071229613?i=1140172815
Introduction to Anarchy:
http://deimos3.apple.com/WebObjects/Core.woa/Browse/mises.org.2941713691.02941713696.3071229485?i=1851355848
JRR Tolkien as a Libertarian:
http://deimos3.apple.com/WebObjects/Core.woa/Browse/mises.org.2942553655.02942553663.3233459101?i=1107558846
