I seem to be getting a lot of mp4 videos to view lately. I have Windows Media Player (11) which does not support mp4's and I also have QuickTime (7.7.6) which does, but is not supported anymore since 2014, so is considered very "un" safe. I do have Norton Internet Security and use FireFox browser, which both still support XP but still don't feel all that comfortable depending on that method of preventing being attacked. Is there a good 3rd. party Software Media Player stand alone and/or plug in that will run on XP, play mp4's and is security safe to use? I've searched around and seen them for download, but am wary of some kind of malware plant withing the downloaded code.