What is the best way to convert MIDI to MP3?

Hi, I am quite good at making MIDI which doesn’t do me any good with Unity because it does not support MIDI. I have browsed around for some software to convert it but it always destroys my tracks. I am wondering what is the best way to go about this?

A quick Google search turned up a few options:

  1. http://solmire.com/
  2. Free MIDI to MP3 Converter - Free download and software reviews - CNET Download
  3. 3 Ways to Change a Midi File to a Wav or MP3 File - wikiHow Tech

For future reference, however, this is not a Unity question, and does not belong here. Questions that belong here are specific technical questions that have objective answers.