Since Snow leopard it is possible to quickly switch between audio in and output devices without using 3rd party software or opening system preferences. Tino will show you how, and you will get the secret code for PodcastMadness. If you are searching for the not-so-secret code, it is: blogmozy
Also check out the other podcasts at http://www.podcastmadness.com to get the rest of the secret codes to win a one year subscription for Mozy.com