Having problems? The HTML5 audio/video tags are still a bit buggy.
Try changing browsers; I keep Chrome, Firefox and IE handy, one of them should work.
Or hit the refresh button (F5), that works, especially in IE and Firefox.
When playing videos allow a few seconds for a "pre-buff", that seems to help.
A wild one lap in the legendary Nurburgring. No music, just the cockpit view in my Pagani Zonda is wild enough to hold your attention. Never mind how many attempts were made before I achieved a crash free lap, I finally got it done. Not the prettiest driving in the world but we made it through with just a few scratches to the paintwork. This thing is eight minutes, if you don't have eight minutes to spare then don't start watching it as you may be late for whatever it was you had planned.
We flew into our secret airstrip then took our secret tunnel to the race track at Alpental. We were late getting there, had to hurry up and get the car out on the track, no practice laps and that contributed to our poor showing in the race. But the post race party was awesome and we did not fly home in the deepening sunset alone.