Update fastPostPlugin.php

added parsing code for http://janinebandcroft.wordpress.com/
Having major problems with javascript causing breakage of find() function.  
Includes some work arounds but not resolving actual problems of missing elements and find() pulling all the data outside of the div scope below the audio elements.  
Found info on javascript causing problems relating to removing line breaks so set $stripRN=false in simple_html_dom.php,  no change.
also updated to latest version simple_html_dom.php, no change.