Hi Eric,
Enhanced Podcasts are an extension that is supported only by iTunes and iPod/iOS as far as I'm aware - though there may be other players or devices now that are compatible. Audition can certainly create the audio stream portion of the package, but the other necessary files are generally built in other tools. There's an excellent walkthrough available at http://blog.makezine.com/2008/02/29/how-to-make-enhanced-podc/
In essence, you create an XML flie that contains blocks detailing each chapter, image, and link you'd like to appear at specific timestamps during playback, then use an Apple tool to build a new file that combines these into a new, distributable file.
It certainly seems like there could be a nicer, cross-platform experience for creating these and while I haven't done too much investigation this morning to see what alternatives exist, I'll put this on the feature backlog for Audition for consideration and prioritization.
Have a great weekend,
Durin
