You need more than one controller plugged in. Emulation of controller plugging in can be either by configuring the input plugin or using an online emulator, such as Project64k.
Unless you are planning to play online games with certain individuals, this emulator is probably your best bet, since most people use it. You'll need to use the same emulator as everyone else to play with those included.
Download Project64k from here.
http://pj64k.emulation64.com
But, there is a group of people using Mupen64k, testing GoldenEye. I would suggest trying that emulator. Maybe we can get some proseletyzings...
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