How to play MIDI files directly in chrome?
Interesting question. MIDI Player from the Chrome Web Store appears to do just that. I haven't tried it personally but it claims to support .mid, .kar and .rmi formats. If you want to quickly test it, then go to https://en.wikipedia.org/wiki/File:MIDI_sample.mid?qsrc=3044.
Edit: I've tried it and it works like a charm