Improvement PHP script

I recently bought a script you can find it here [login to view URL] It is a relatively simple php script all it does is generate a web page with Add sense based on the keyword you enter. Here is one of my pages running the script [login to view URL] If you click on the left menu you will see the page change, however just the advertising changes, the RSS feed stays the same. The rss feed is based on one main key word in this instance music. I am worried that google will see my site a duplicate content, so here is what I need. On the main admin page I want to be able to enter more than one main key word and this will then randomly change the content of the rss feed. Based on one of the keywords. I want to be able to write about 10 articles and have them inserted randomly into a created web page so the content for each page is always different or ( the ability to pipe in some blogs Via rss). If you have any better ideas am open to suggestions I will send the winner the full script. The script is very simple PHP and HTML