Some months ago I read the story of how Textcast was created ... but (coincidentally) about a week earlier I'd created basically the same thing using Mac OSX's Automator. And months and months later I'm finally getting around to sharing that Automator script.
(I don't intend any disrespect to the Textcast authors. I understand they've done a nice job on their application ... but I don't need many bells and whistles ... and all the pieces were just sitting there in Automator ready to go ...)
You'll need a little Automator understanding to modify the paths and locations for your own use.
Here it is: spoken_web.zip
To use it, I copy the text I want to convert onto the clipboard and run the application.
(keywords: voice, reading, spoken, web, podcast, itunes, audio)