One Page Applications and Open Schedule

I am writing a SPA that uses an underscore pattern. The application searches and records music albums and returns the result via ajax. If the meta tags with the open facebook graph cannot be changed dynamically and the page URL is constant regardless of the search result, how can I make it so that users can share what they rated a particular album.

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<meta property="fb:app_id"      content="118454308341351" /> 
<meta property="og:url"         content="http://www.appurl.com" /> 
<meta property="og:title"       content="Fleetwood Mac Rumors" /> 
<meta property="og:image"       content="AppImg.jpg" /> 

and update these properties to reflect this search result.