I gave the NES emulator a try yesterday and it plays great. Audio even works. "Nesoid"
The app is free and it comes with Chip and Dale, but if you pay $1.99 you can get the unlocked version which allows you to play any or all of your NES roms.
The app is free and it comes with Chip and Dale, but if you pay $1.99 you can get the unlocked version which allows you to play any or all of your NES roms.