I agree with you totally, the main reason is that the page you see is added thru the admin page add, it is not an actual page as in page.php/html that i can edit (and i dont want to do that anyway because when an update comes out i will lose my edits) it is simply a parsed rendition of what i add in the content section of the page add. Think of it as a textarea that you can add html and a call to a js file in the header which produces the page display.
Most people do a plugin but that entails hooks, libraries and for me is way too time consuming for such a simple task.
So i used the add page, tossed in an iframe for the mp3 display and then included my form on the bottom.
so it seems my option is to pass that value from php to js in order to fill that empty div..
I have an ajax that i built a while back, well you all helped with it, its totally redone and works, and i could just put the listener in and
grab the value from the responseText but as i said i was hoping this would be a slam dunk deal lol...