I used the Camtasia Studio 8 PowerPoint add in to record audio on my slide show. I produced the project using the AVI file format. When I play the AVI file, I can hear the audio but cannot see the PowerPoint slides.
You recorded using the PowerPoint Camtasia plugin and then could see this (trec) file as a single track or AVI / Wav as two tracks on your project timeline, correct? Your video (slides) were visible there but not after rendering?