I figured out that there are a number of video games that I totally zone out to, so I made a youtube playlist of the music from them. I can get a lot of work done if my brain is fooled into thinking it's playing Dwarf Fortress. :D
https://www.youtube.com/watch?v=-6FXeupOp04&list=PLqMhEQLp4CvDFz6fsWYKXIpCmSKe6GIzN