HELP!

I'm not sure why but I can't play the video in the window above. Is it playing for anyone else? It is just a blck screen that shows the Windows Media logo. It worked before, but since I have returned I can't get it to work. Does anyone have any suggestions? I don't recall doing anything special before to get it to play. This is driving me nuts. I'm not terribly computer smart, but I've usually been able to figure things out. This has me stumped, and it's probably something really simple. Oh well, can't mess with it any more, time for me to get some sleep. Have work tonight. Thanks for any help you can give me!