I'm relatively new to Linux, using Ubuntu 16.04 running Firefox 60 browser. My browser just updated to 60 last night, having previously been version 47 that came with the distro. During the update, firefox disabled nearly every plugin that was installed on 47. In neither version of firefox can I get embedded videos to play. Youtube videos seem to play just fine. In looking thru the forum, I've only run across partial answers. Any suggestions would be appreciated.