In the main settings of Replay AV you have the option under the "Podcast" tab to "Automatically convert MP3 Episodes downloaded from the Media Guide to iPod Audiobook format".

In the settings for the show itself under the "Basic" tab you have the "After Recording, convert to:" option to set the format to whatever you want including iPod Audiobook format. Does one take precedence over the other?

Also, does the show's setting "have" to be set for "Nothing - Leave As Is" in order for the the checked option under Main Settings | Podcast to work?