Wasn't exactly sure where to put this, was going to put this in NES forum, but I figured there's more to this than just the (mostly bad) dumps of NES games
http://www.waixing.com/apk/
It seems like a lot of android stuff is uploaded up on their server just ready for anyone to take. Oh yeah, and of course roms for consoles such as NES, SNES, Genesis, N64 and even some neo geo stuff.
Hauntingly, it seems like everything was last modified around 2016 which sort of coincides with Waixing's last news post, so who knows what Waixing is up to now or if they're still in business

Thanks to a great invention called NSF2mid (which you can find on Gill's site) I was able to convert Pirate NSF music into Midi format. All you pretty much have to do is click instruments and try to make the song sound good.

I attached one of the midi's I made, took me a while to find a good instrument for the Triang.

Attachments:

• Shui_Hu_Shen_Shou_NSF_track_3.mid (85.31 KB)