Windows Media Video 9 Professional

Okay, so I’m trying to watch this trailer (On Windows Media Player 9), the audio’s perfect. However, although I’m getting the video, its to slow (not matching up) and freezes while the audio continues. This really bugs me. Accordng to the properties I need Windows Media Video 9 Professional codec for this video. But I’ve been looking and looking and i can’t find that codec anywhere. Please help!

There’s no “professional” codec. Windows Media Video 9 is just Windows Media Video 9. If you saw professional somewhere, chances are it’s related to the encoding profile rather than the codec itself.
Anyway, back to your problem. Chances are your pc is underpowered. WMV9 is a very processor-intensive codec and will drop frames/play video out of sync on older processors. There’s not much that can be done about this. You could attempt to allocate as much resources to video playback by closing all unnecessary background tasks (instant messaging, file sharing, any icons in the system tray, etc).