This time the NEC MDX and PDM music file formats can be played on your browser, using this interpretation of his code in CODEF!
These PC-98 / X68000 computers where largely a Japanese phenomenon and few people outside of Japan may ever have heard of them. However for the time the Yamaha sound chips used were actually pretty good.
Using this player you can play the .m and .mdx files found for example on modland.com, and play them on your browser.
As always, enjoy!