So, I have an RSS feed with variations of each item. What I want to do is just get entries that contain a specific section of text.

For example:

 <item>
    <title>RADIO SHOW - CF64K - 05-20-10 + WRAPUP </title>
    <link>http://linktoradioshow.com</link>
 <comments>Radio show from 05-20-10</comments>
 <pubDate>Thu, 20 May 2010 19:12:12 +0200</pubDate>
 <category domain="http://linktoradioshow.com/browse/199">Audio / Other</category>
 <dc:creator>n0s</dc:creator>
 <guid>http://otherlinktoradioshow.com/</guid>
 <enclosure url="http://linktoradioshow.com/" length="13005" />
 </item>
 <item>
 <title>RADIO SHOW - CF128K - 05-20-10 + WRAPUP </title>
 <link>http://linktoradioshow.com</link>
 <comments>Radio show from 05-20-10</comments>
 <pubDate>Thu, 20 May 2010 19:12:12 +0200</pubDate>
 <category domain="http://linktoradioshow.com/browse/199">Audio / Other</category>
 <dc:creator>n0s</dc:creator>
 <guid>http://otherlinktoradioshow.com/</guid>
 <enclosure url="http://linktoradioshow.com/" length="13005" />
 </item>

I only want to display the results that contain the string CF64K. While it's probably really simple regex, I can't seem to wrap my head around getting it right. I always get seem to only be able to display the string 'CF64K', and not the stuff that surrounds it.

Thanks in advance.