Half podcast episodes missing
Only half of my podcast episodes are turning up in iTunes - I think this is because Feedburner isn't picking up on them (http://feeds.feedburner.com/ThePilgrimsPodcast). I may be past some maximum information limit. Is there some way to either filter my blog feed to only include posts with podcast audio (like, instead of plugging in the website's URL - plug in the URL for a blogger label)? Or should I figure out another hosting service?
https://itunes.apple.com/us/podcast/the-pilgrims-podcast/id942105067?mt=2
Windows 8