If your videos are not playing please provide the following information to your tech department.
If you go to the video on MiStreamnet.org there is a "Help and Feedback" link you can click on. It tells you that: Assets are streamed using the HTTP (port 80) and RTMP (port 1935) internet protocols. The 2nd port seems to be an issue at some schools. It's a quick fix for your tech department. Host domains are: mistreamnet.org
(126.96.36.199) There is a place to put your contact information and detailed message. They will contact you back, but in the meantime please give the above information to your technology person that handles your Internet filtering to make sure these are not blocked.