On Lab and Classroom machines on campus, Mozilla Firefox is currently blocking playback of flash objects, including streaming videos hosted on Rev.  If you load up a streaming video and cannot get the video to play, look for the following icon in the address bar.

Once you click on the red icon, choose “Allow and Remember” and your flash objects will work as expected on the page.

If you have any further questions, please contact UW-W Desire2Learn Support.