>>24021
What are you looking for, exactly?
I remember some emulator a long time ago, maybe Nesticle, maybe something older, that would let you tick each of the four sound channels and mix and match as you please. Also had WAV output and simple sampling settings like KHz, etc.
That would let you play any section you want to sample and export sound effects, etc. However, I thought of something easier.
I used to use WinAmp to play NSF files with an NSF extension. Then WinAmp also supports a WAV export function. Most NSF files I found included all sound effects after the music.
I love the NES and would be willing to help with this project if you give me more details.