I installed fishy and fce and both wont load they complain about directory issue cant find it or something.
the readme says /mnt/sd/roms/nes. so i made those dir in the root of sd card.
1) Go to root of SD
2) Make a folder called roms
3) enter that folder
4) make a folder called nes
5) enter that folder
6) fill it with nice, shiny nes roms
7) give yourself a pat on the back and enjoy the emulation-y goodness.