I have similar issues with mine where it seems the URL for the audio file is being changed and iTunes doesn’t like it. iTunes is labeling it as a byte-request error but after investigating it, the actual problem is that the link to the audio file is broken. I finally got the error to go away from iTunes by disabling the Seriously Simple Stats plugin but I’m waiting to see if it actually fixed the problem with iTunes (originally iTunes wasn’t showing any of my episodes because it wasn’t seeing an audio file attached.) Is there a way to TURN OFF the URL creation for the audio files and JUST USE THE DIRECT LINK????
Our Podcast feed url is http://www.chapelnext.net/feed/podcast