Courtesy of the excellent odiogo, the excellent text to speech service. This is a free service that bloggers can use, it takes your RSS feed, splits it out to each separate post and then creates a MP3 for the post.
The text-to-speech quality is really good, only about 1 in 50 words is corrupt/unintelligible – easily high enough quality to get a good rendition of the post. Obviously it depends on the content of the post, I have not yet listened to a post with lots of sample code or the like, but I expect it would be pretty hard going.
Get the audio for this blog here. You can even subscribe in iTunes. I will also update the site to include the links in the sidebar.