I have been creating Podcasts using Keynote and iMovie. This has been working fine, and I have created podcasts that cover a basic calculus course completely.

Yesterday I needed to create another podcast. I started my Keynote, produced and recorded the presentation, and exported it to Quicktime. But no sound. The recording did not play anymore when the presentation was exported to Quicktime.

I found out that the culprit was the new version (4.5) of Quicktime. See

I have earlier reported in this blog about using GrageBand, a component of Apple’s iLife 08, to produce Calculus Podcasts. While GarageBand allows the convenient editing of the soundtrack, the quality of graphics that GarageBand supports, is not good enough for Calculus Podcasts.