Things You'll Need
Instructions
Insert the male audio/video cables from your NES into the female ports on your capture card.
Plug the male cables from your capture card into the female AV ports on your television.
Plug the capture card into a USB port on your computer.
Turn on your Nintendo.
Start the video recording software that came with the capture card. This will also record the audio tracks while you are playing.
Open the video file with your audio recording software, and sample the NES tracks that you want to use in your own music.