On the right you will find links that may help you play the libraries streamed videos
Google Chrome may have trouble playing Flash based videos from the Library. If you are seeing an error message "Error loading player: No playable sources found" this is most likely the problem. It is recommend if you get this error message to use another browser like Firefox. Also, always make sure that you are using the latest version of Flash
You can go to your advanced settings and see how Chrome is set up to allow Flash but the fix is not always straight forward.
One thing to check for Chrome, is to