Actually there r a lot of s/w available on net to convert MP3/Wav files into MIDI files.
But U'll get so poor output (i.e., converted MIDI file), which u even can't recognize!
Those MIDI files, which we d/l from net or d/l from GPRS, r made by professionals using some instruments attached to computer.
So forget about ne s/w to convert MP3/Wav into MIDI...