Right click on a video, then 'TabPlay' from the drop-down menu. If you already opened specific video, then right click somewhere on the web page, and then 'TabPlay' from the drop down. Alternatively you can pin the extension button to browser taskbar and press the button from there.
v1.1: 1. added graceful browser notification messages when user click extension in the wrong place: "Right click on the YouTube video, then "TabPlay" from the dropdown" 2. solved issue with the videos restricted for embedding, by redirecting the browser window to the actual video on YouTube
