If you just want to use a script/application written for Magic2Snes just follow these steps. Magic2Snes comes with QUsb2Snes, if you are using QUsb2Snes and not Usb2Snes you can skip the first 2 steps.

• Download Magic2Snes on the release part of github (should be 7zip file)
• Start USB2Snes
• Run Magic2Snes
• Use the ... button to choose the script to run (the main .qml file)
• Click on the run button if available.

Note that with QUsb2Snes, the script will appear into the Magic2Snes menu and allows to start directly the script without the need to start Magic2Snes directly.