After a lot of hemming and hawing and playing around with the technology, Tiny Church is podcasting my sermons, as well as those of any guest preachers who want to record themselves preaching... Here is our page at SermonDrop. In the next few days we'll have a link from our website to this site, but you can always go there directly.
We are also listed in iTunes. Search for "Idylwood Presbyterian Church."
So far, SermonDrop has been easy to use, and I like the features. Right now we're using the free version which means only the 10 most recent sermons are available. We might upgrade at some point, but honestly... how much preaching can a person take?