It started around the time I downloaded Google Chrome, but I'm not sure if they had anything to do with each other. Videos and Audio don't work on any site for me- I live in China so I use Youku, Tudou, Soso, Tumblr, and all of these sites used to let me see their videos and listen to audio on firefox but they suddenly just don't. I've tried restarted firefox, reinstalling it, and reinstalling adobe flash player, java script, but nothing seems to work. I know that the videos can work, because they do on Google Chrome, but Google Chrome doesn't have all the plugins I can get on Firefox, and I want to start only using firefox, but I'm unable to do that if all videos and audio refuses to work for me.