Hey, upon the release of Mumbo's Wand, I thought these midi files would come in handy when injecting new music into the BK ROM.
I was going to keep it for personal use, but I though that I'd may as well make it public. It took a long time for me to mirror the complete site directory and download all the midis.
Also, if you'd like to view them all in order by games, open the index.html file in each folder.
This pack contains around 30,000 music files from almost every console ever made.
(Extracts to about 850MB, 90% compression rate.)