Hello, as I said I have tried several solutions here. I am on my schools website and it has videos I need to watch and I what I think are flash videos/HTML5 videos. The flash interactive activities seem to be working fine, but not the videos (flash/html5). The other videos which are in i think .mp4 format were just giving me the VLC cone and no options when right clicked/clicked at all. The windows media player is not supported on my 64-bit firefox browser and in quicktime it gives me the quicktime logo, then the first frame of the video but nothing else. My silverlight is up to date. I tried realplayer but couldn't get the app installed on firefox add-ons and I don't think switching players will solve this problem now anyway. On the flash/html5 videos that im trying to get to work it says "a plugin is needed to play this content" so I have reinstalled java and flash several times with it not working still. I have also tried various "always activate" and "never activate" schemes. this link: https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows under my OS which is 64-bit windows 7 says that it's not applicable to my version of windows, but they only have 1 form of windows 7 update available. Really not sure what else I can try! Thanks in advance.