I recently installed BSNES super Nintendo emulator v0.84 and I tried running super Mario kart ROM. It said Warning: NEC DSP firmware dsp1b.bin is missing./ I go and install that. Now I try running it again and this time it says Warning: NEC DSP firmware dsp1b.bin is of the wrong file size. I do not know what I'm doing wrong or where to put the darn thing. Please help.

Can't help with this one (legal reasons).

The answer here is that you are trying to illegally use NES, that's why we can't help.

How is that illegally using a snes emulator? To be honest I really didn't know that was doing so. I'm telling the truth ;O

Okay answer this.. what am I doing that is illegal? Just explain so I know what I'm doing is wrong.

The emulator itself isn't illegal. But the ROM you are using may be. That video games are protected by copyright. Unless you legally obtained the game, then that is pirating.

Thank you ScottGem