News from the Mupen64 Team :
More information
Here
This is the first release of Mupen64Plus for Windows and Mupen64Plus Build Environment for Windows. The new port is more up to date, can use blight_input, should have less problems with graphics plug ins, and has a better looking GUI. And you can Stop and Go (If you get an error about "GetDC", press stop a few times and try again.)
Mupen64Plus Build Enviroment
Mupen64Plus for Windows