Windows NT and DVD Decoders?

An Anonymous Coward wanted to know about the following: "Last month there was discussion about DVD and Linux. What about Windows NT 4.0 and DVD software decoders and players? Where are they? There are Windows 98 players but there are no support for DirectX 5.0 in WIndows NT 4.0. But why is DirectX so important? So far, I've only found one NT DVD decoder: WinDVD."