What I've made so far:
https://soundcloud.com/the-nameless-bard/track-version-8

decided I wanted to play with making tracks so I looked around for a free program and found LMMS, which works pretty well in general.

if any of the rest of you want to play with it:
http://lmms.sourceforge.net/download.php

To use midis from other sources you need a soundfont (http://www.sf2midi.com/soundfonts/).

It's a Linux conversion, so if you have issues with it on Windows I'd recommend using the forums (most of the directions on the help wiki are for Linux).