We have updated the video player recently and we understand that some browsers are not fully compatible with this new player.
For the incompatible browsers that we know of we will continue to use the old Flash player, but unfortunately we do not know which other browsers may cause problems.
So if you experience any problems with playing videos then please click on the "use the old Flash player" link below the video which will appear after you start the video.
We are always looking for ways to improve the quality of the site so please be patient if you experience any problems and report them to us via the contact form so that we can investigate and fix it! :)