I found a great source of free lectures of these subjects:
http://web.gsm.uci.edu/~navarro/download.htm
The first section, Principles of Economics, is an audio book (about 8 hours long) encompassing both Macro- and Microeconomics. Section 3 and 4 are PowerPoint lectures, which can be downloaded and run as slideshows; from what I can tell these essentially have the same information as the audio book, so downloading the huge files isn't necessary.
I know most folks on this site want to study the notes here and get the exam over with, but this is a great supplemental resource.