TubeNet

Does anybody know of a program that will convert mp3's to MIDI?

Yes, but you may not be very happy with the results unless you're converting just one or two voices.

Here's one available in a trial version:

http://www.mp3towav.org/TS-AudioToMIDI/

Basically, they all work the same way--any tone sounding above a certain level is converted to a MIDI sequence. The problem comes in with things such as multiple voices, reverb and percussion--any of which can render an MP3 as senseless MIDI hash.