If you are using FireFox you may get the error message "Error loading player: No playable sources found."
In that case simply download flash player by going here, https://get.adobe.com/flashplayer/ and then restart FireFox once the download is complete.
This could also be caused by Flash being disabled in Firefox.
To check if Shockwave Flash is disabled on FireFox, please follow the steps below.
1. Go to the FireFox Menu
2. Navigate to "Add-ons"
3. Select "Plugins" on the right hand menu
4. For "Shockwave Flash" make sure the right drop-box is set to "Always Activate"
This will enable Flash. Please refresh the page and the video should now be playing.
If it does not play, Flash may need to be re-installed.