Make sure you have upgraded to the latest version of whatever browser you're using. Here are the links to make sure you're using the latest version:
Although Several Sources videos should play properly in all browsers, we strongly recommend one of the three listed above. If you still can't get the videos to play in your browser, try one of the other three.
AOL USERS - if you are having issues viewing the videos, the AOL default browser is probably the reason. Please use or download one of the recommended browsers listed above as they are much more compatible with most websites.