So i tested out yesterday this thing and it does indeed works with some Mupen Frontends too.
But every single Frontend has a flaw that other don´t have and vice versa.
So i ended up using just the standalone Mupen64 with some Command Lines.
All in all, it´s running superb. The only thing yet i have problems are the controls themselfes.
Editing the "mupen64plus.cfg" here is necessary.
I also used this site as a reference:
http://en.qi-hardware.com/wiki/Key_codesSo far i got "Escape" To Menu, the usual WASD to the C Buttons, Q and E are B and E, Space is "Jump".
Now here is what i don´t get.
Other keys such as "Left Ctrl" for "Control Pad Down" isn´t working.
I´m not really sure what is causing this. Left Ctrl should be "305". Yet it still wouldn´t work for that key. It just baffles me that i "somehow" got the other Keys working so far. I have no clue what is preventing this now. Other sites claim it should be "17" and not "305". Still wouldn´t work either.
Edit:
I got it to Shift (304) instead of Ctrl, which isn´t the way i want but at least it´s working.
Still doesn´t explain why Ctrl isn´t working.
Now does anybody have an idea how the Mouse Buttons are called?
It seems to be the only thing left and i could share my config for the controls.