Imagine a disc spinning clockwise, the top edge is moving to the right, the bottom is moving to the left, and the right edge is moving down and the left edge is moving up.
By mounting that disc at an angle and changing which edge makes contact with whatever rests on it (your foot in this case), you can change the direction the disc's rotation moves it.
The sun contains 99.86% of the solar system's mass. Jupiter contains .2%. The other gas giants make up the rest, and everything else combined rounds down to zero. You could dump everything from Mercury to the Oort cloud into Jupiter and it's still not enough mass to turn it into a star.
Oddly enough, zip files are a supported playlist format in VLC, so you can just have them open the zip file. I don't recommend it, but it's technically a solution.
Making an actual playlist and having them load that instead would work around your VLC problem and should work in other music players. An .m3u playlist is fairly well supported, and it's really just a list of file names in the order you want them played. Remember to use relative filenames so it works wherever the zip file is extracted.
By mounting that disc at an angle and changing which edge makes contact with whatever rests on it (your foot in this case), you can change the direction the disc's rotation moves it.