Most of the MP3/WAV to MIDI programs wont work perfectly. They cant. Because thats the way MIDI files are written. MIDI are more like Notes for Standard Instruments to be played while MP3/WAV is combined waveform of the amplitude & frequency.
MP3/WAV is like Complied EXE and MIDI is like Source Code.
I dont think you will ever get a decent MP3/WAV to MIDI conversion unless the WAV was made from a MIDI directly.
the reason that we dont get accurate conversion from MP3/Wav to MIDI is because the fundamental structure of the MIDI file differs from the other sound format files.
because, MP3 and WAV contain the actual sound , whereas an MIDI file does not have any actual sound data.
IT merely contains instructions for the sound processor to RE-Synthesize the same music, so , it's impossible exact replicas of Mp3 files in MIDI format.
you could try using WIDI v3.0. from
here
http://www.polyphonicwizard.com/
MP3 to MIDI
Linear Mode
