I am working on a project related to vintage web designs. I would like to embed and autoplay a midi file but:
Well, here it is Aug 13, 2017 and don't you know embedding a bg midi on a web page is still a mystery.
In fact I'm pretty certain it can't even be done anymore (except IE's bgsound src, which still works fine for me).
But as for Firefox and Chrome, the solution provided by jofeu is a great work-around.
I only wish there was a way to embed so the midi just starts playing on page load, without having to click anything. I guess those days are gone.