Issue with iTunes showing new episodes

[twocrimewriter...@gmail.com]

Having a problem which I think is related to the RSS feed. New episode hasn't fed through to the iTunes list - yet is available for subscribers. They have told me that there is a problem with "line 1183" on the RSS feed. Not being very technically minded, I can't see where an issue has occurred, which has changed anything. Twenty five episodes before this one have been posted without issue. 

Looking further on Feedburner has brought up this

http://www.feedvalidator.org/check.cgi?url=http://twocrimewritersandamicrophone.podomatic.com/rss2.xml

I have zero clue what this means or how I can fix it.

Any help would be greatly appreciated!

[gekiatu]

はじめまして。最近なりグーグルから私にメールがかなりくるので、何のことかと考えていたところです。

わたしが作ったサイトのフィードにアクセスがおおいらしく、

なに何も考えていたわけではなかったので　この先どう進めるか悩んでいます。