rss feed problem

I am having problems with my rss feed for my pod cast.  my feed is 
http://www.passionchurch.tv/podcast/itunesrss.xml.  I have tested it in 
feed validator and I keep getting this error message:  "Sorry
This feed does not validate.

line 264, column 2: XML parsing error: <unknown>:264:2: mismatched tag 
[help]

</item>  ^"

However, it is the same as the other parts of my feed and they work 
fine.  

Any help would be greatly appreciated.  I have tried everything and 
don't know what to fix.  Thanks.

Steve.



 
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