There is actually a very simple solution to this.
1) Go to http://www.google.com/webmasters/+1/button/ and build you Google+1 button. You’ll get two pieces of code.
One that will say: <!– Place this tag where you want the +1 button to render –>
and one that will say: <!– Place this render call where appropriate –>
2) Open up your header.php file and add the code under <!– Place this render call where appropriate –>
3) Go to the Social Media Widget (this plugin) in the widgets area, in the settings for Widget Text add the second set of code: <!– Place this tag where you want the +1 button to render –>
and voila!
You can see it here: http://www.appsplit.com
