Is there any way (preferably free) I can convert an mp3 file to MIDI? I do have a use for this.

you can just google audio to midi conversion you can find lots of program to do this job
you can also use logic pro or express, melodyne even the wave tune plugin can export midi or if you want to send me the file @ ironheadmx____@_hotmail_______dot_com i can do the favor of converting it you can also find me on skype