MTPR's live stream was recently updated. If you can't see the play button or can't stream from MTPR.org, try clearing your browser cache.
How to clear your browser cache in Google Chrome: https://support.google.com/accounts/answer/32050?hl=en
How to clear your browser cache in Microsoft Edge: https://support.microsoft.com/en-us/help/10607/microsoft-edge-view-delete-browser-history
How to clear your browser cache in Mozilla Firefox: https://support.mozilla.org/en-US/kb/how-clear-firefox-cache
How to clear your browser cache in Safari: http://osxdaily.com/2016/01/17/empty-cache-safari-mac-os-x/
If clearing your browser cache doesn't resolve the problem, please submit a streaming report here.