Click on the link and a box will appear with the video. Click on the upper right hand side of the box you can expand it to full screen.
Click anywhere outside the box or use esc to get out of the video.
Disclaimer: I was doing this after work at 4:15 am.
How-to-use-a-flickr-image-for-wordpress
You are very welcome Sam.
You are the first to comment on my blog, thank you.
If there is anything I can help you with let me know.
I have weird work hours but I will get back to you.