In our next release, we are adding the option to make the plugin static (i.e not float) and give users the option add it above/below their content.
Now as for adding right below the title, that has to be done manually. By default we add the plugin above content because not all themes have the proper hooks to add items after post title.
But Genesis do, so you can do it fairly easily.
You would need to create a function and hook into genesis_after_post_title
if ( function_exists( 'floating_social_bar' ) ) floating_social_bar( array( 'facebook' => true, 'twitter' => true ) );
Paste it in your child theme's functions.php file. To add other buttons or change the order read our FAQ section.
Genesis hook reference can be seen here:
If you want to hook this into another hook instead of the after post title one that I used in the code above.
Now as for the Youtube video, this will happen with all video embeds and flash ads. You have to add wmode=transparent in your Youtube embed code. Now if you use WordPress oEmbed like most folks, then simply follow this tutorial: