I read your post and found it interesting. I had a need for something similar to BNarrator. However, I needed to change my audio messages often and quick on my blog. So, with some engineering friends, we developed MyVoice widget. With MyVoice, you get a customized widget and phone number to call into the system. Once you call in and leave your voice message, within minutes, your voice is on your blog. If you use your cell phone, you can be just about anywhere and update the voice message on your blog. You can change your voice message when ever you like. Visit http://wordpress.org/extend/plugins/myvoice-widget/ to get the details.

Ken Jimmerson