I have downloaded this from extras and have added some n64 roms to my root folder on n900. The problem I have is when the rom starts I can't seem to get passed the bit that says press start....
What is the start button? I looked at the control settings but the only other option for start was keyboard.... which isn't a particular button.
Read the first post in this thread. It contains instructions to install a so called "custom config" that will set your keyboard, PS3 controller, and in the future, Wiimote controls for mupen64plus.