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.