I am not sure of its relevance to this discussion but, unlike a recording, a MIDI file is essentially a score too. Even a relatively simple program such as Garageband on Macs can, albeit with a little editing, print a pretty readable sort of score from a MIDI, good enough for learning purposes anyway, and I am sure more sophisticated software must exist by now to do this task legibly for more complex music. Perhaps this is why there seem to be fewer sites around now with free MIDI downloads.