I understand what Patty is talking about with the audio quality. I have a headset on my laptop, but it just did not seem to help. I had created a math unit review for a student in powerpoint and tried to save it in Camtasia. It just didn't work through our work portal so I finally ended up dropping it onto our department's 'wikispace in the making'.
Here is the site: http://bwaelementary.wikispaces.com/Math+5
It is the first link. I appreciate any suggestions. My intention is to chop this down into smaller chunks for students to access by topic. This is one of my earlier ventures this year before my 'multimedia' course. Nothing fancy.