Are you interested in creating web pages and audio-only podcasts? If you don't have access to Apple's iLife applications, you should consider downloading Nvu and Audacity. These free programs make it simple to produce quality html documents and audio files. Nvu and Audacity can be found at these sites: http://www.nvu.com/index.php 
http://audacity.sourceforge.net/ 
 
When you download Audacity, be sure to grab a second file called Lame. This file helps Audacity export audio clips into the MP3 format.