MissCoriel's VG Music
That's right.. I am still doing this. I have over 300 posts on soundcloud but I will post things I actually use in S4league. You can put them in the music folder and access them in the Jukebox tab in the sound settings.
A sample of how it sounds in-game.
This one is an Mp3 but if asked I can convert it to ogg for ya.
Got requests for anything from NES-SNES era, I will likley be able to make it with some effort, should I choose to make an effort.