Apparently quite by mistake Hugo Schotman has discovered that iTunes 4.9 not only downloads your audio files but somehow pulled down a PDF. I have a question out to him asking how they are doing this and the mechanics behind it. Imagine having photos or a small video to attach along with your podcast. We know that they are embedding some photo elements on the aac side of the house. This will be interesting to figure out how this works. [Hugo Schotman]
Sounds to me like a whole chapter in a podcast book could be done on the iTunes integration.