What you can use is a program called "Audacity" and start the recorder on it, then start your midi player. When you have finished, save the file as a wav file, then convert it to a MP3 file.

OldGrayOwl, thanks. The recording isn't working so well however. I am assuming I need an external mic or something. Once recorded the playback is very faint and fuzzy?

The big problem in this kind of conversion (MIDI to anything other than MIDI) is that the MIDI file doesn't contain any sound data, only instructions on what synthesized instruments' notes to play at what time and for how long.

This conversion requires at some point to have the MIDI played and the audio captured into a "digitally sampled file format" (e.g. WAV, AIFF) that can then be converted to MP3. When you tried using Audacity, that's effectively what you were doing: relying on the computer's built-in mic to pick up what is playing through the computer's speakers and store it into a sampled file in Audacity. As you've found, bleedorange, your mileage may vary.

Audacity won't do the recording "internally," which is what we'd prefer instead of adding noise and distance between a built-in mic and separate computer speakers. A look on Google and download.com shows some software packages that will directly convert without playing the MIDI "out loud," but the majority of them cost $20 and up.

I know iTunes on the Mac will do the conversion directly, with the end result usually sounding a little deeper than the original. I'd guess that iTunes on Windows should support the same feature. If you have access to iTunes, go to the "Advanced" menu, pick "Convert to MP3," and select the midi file. It should sound much less faint when you listen to the final MP3 file. "Fuzzy" or "deeper" might still happen.

Good Luck!

Do you want a version with or without words? I can record it with audacity and send it to you. The problem with audacity not recording correctly is that Windows Vista blocks the feature to record via line-out. If you have an older version of Windows you will most likely be able to do it.