I think it’s the best

I tested a lot and this is the best I think.

After activation of the plugin I get an error message (something with “header already sent …”), I don’t know if it’s the plugin or my website though.

I ignored that and activated the plugin again fom the WordPress plugins dashboard. After that I connected the plugin with my Google project (it’s a little bit complicated but there is a link to good manual inside the Speaker plugin) and konfigured it.

It works. And looks good.