Did you start MM for Windows 4.1 (MMW)? It is in beta form only and has to be downloaded from the related forum. Be aware that there are risks, so either have a backup of all your music and MMW settings (recommended anyhow) or use a portable installation with a separate library with just a few tracks.

I can't get my android device to see the MMW server.

Is there some way of setting up the share system? In the instructions it says it should be there already.