Wordpress Themes - WP Forum at BFA - How to integrate scripts into posts

I have a question that you may or may not be able to answer, but if you can $100 to you. Anyway, I want to integrate the following script into my theme so the video it generates appears in every post. I hardcoded the script after the <body> tag. It works but the video appears outside the page at the top of the browser. (see here: http://www.theimproper.com/134496/ro...r-trailer-see/)

I'm told the script needs a "selector" to identify posts. This is usually involves a <div> tag. But I can't find the appropriate selector. Ideally, this video will appear after the 5th paragraph in each post. Here's the code:

<div class="vdb_player vdb_568927c7e4b098feda361f34554203dbe4b064656db31e 16" vdb_params="m.o2inline=inview&m.position=5&m.selec tor=%23lipsum%20p">
<script type="text/javascript" src="//delivery.vidible.tv/jsonp/pid=568927c7e4b098feda361f34/554203dbe4b064656db31e16_bein.js?m.o2inline=inview &m.position=5&m.selector=%23lipsum%20p"></script>
</div>

I need to replace %23lipsum%20p" after selector= with the identifier for a post in atahaulpa. Or if there is any other way to do this, that would work, too. The script will work without a selector, I just can't place it. Any help would be greatly appreciated. Many, many thanks!