This is something we at The Conversations Network have wanted to see for a very long time: PowerPoint or Keynote slide presentations online with synchronized audio. The folks over at SlideShare have added this capability to their system, and it’s terrific. They have an excellent editor, written in Flash, that allows you to set the slide-transition points relative to the audio file.
As a test, I uploaded a Keynote file (first converting it to PDF) from a presentation I gave a year ago entitled The Secret Lives of MP3 Files. Next, I uploaded the MP3 audio. Then I used the SlideShare editor to set the transitions. Because I knew the material, I was able to synchronize a 45-minute presentation in slightly less than 45 minutes. Not bad at all. Here’s the resulting presentation: