Plays music in X68000 MDX chiptune format

Current versions

mdxmini requires the following formula to be installed:
sdl 1.2.15 Low-level access to audio, keyboard, mouse, joystick and graphics

Recent formula history

ilovezfs Indentation style fixes (#19679)
ilovezfs Use “squiggly” heredocs.
ilovezfs mdxmini: fix test on 10.13
Viktor Szakats mdxmini: secure url(s)
Misty De Meo mdxmini: update URL to test song

Formula code at GitHub