I like playing MIDI on HTML so here's a demonstration of Cifkao's MIDI player.

King Meteor's MIDI cover of Collision Chaos B Mix.

My MIDI Cover of Sonic 3 Credits. (Not the movie, the video game.)

MIDI Cover of Ice Cap Zone. Dunno who made it.

can somebode PLEASE tell me how can i change the soundfont to an sf2 file url?