Need Help to start with programming MediaPlayerControll

Hello.

I'd like to write an applicition for a PPC (iPaq 2190) with
WindowsMobile 5.0 and MediaPlayer 10.
My problem is, that I don't understand the many Namespaces, Interfaces
and DLL's and so on....
I have to write an application in C# that has the basic funktionality
of the MediaPlayer (Play, Pause, next Track) and I have to work with
different Playlists.

Can anybody tell me:
-which DLL I need to add as reference in VisualStudio 2005 (Beta)
-which Namespace I have to use

Or did anybody know a sample for PocketPC?

Thanks in advance for Help!

Daniel