What a nostalgia. I used to scourge the internet (with a 28.8 Kbps modem nonetheless) for .midi files, put those files in a playlist, and play it throughout the day.
Later on I found out MIDI can sound much better using better sound cards, e.g. https://en.wikipedia.org/wiki/Sound_Blaster_AWE32 (mine was SB16)
Pure magic.