http://www.ofoct.com/audio-converter/convert-wav-or-mp3-ogg-aac-wma-to-midi.html

for the benefit of those who haven't seen it already

go on, try it

wait did you mean to link the midi to mp3

or were you looking for the actual mp3 to midi

i'm good at reading

Haha, some of the results are hilarious!

It deals somewhat well with polyphony, although when there's too rich textures it fails spectacularly.

Truly the future of music

http://puu.sh/kIhCA/49cccab5ff.mid its not that bad actually! it seems to deal well with chipstyle stuff
i love how the kick sounds like a punch on the lower notes or something lmao
i should try it with other stuff..............
edit: the songong is this

^{i wish i could date the spider................}

Ohhh this one doesn't sound like total garbage :O
http://puu.sh/kIlgV/5e6e91521d.mid

Kind of crazy but I think some of the vocals are intelligible.
http://b-knox.com/audio/keep%20bit%20up.mid

Fooled around, realized it did piano only. And...

Heh... I think I've managed to get this thing to produce cacophony.

Hear Rets Work AuDiOh