From XPUB & Lens-Based wiki
Website http://timidity.sourceforge.net/
License GPL
OS GNU/Linux, OS X, Windows
Media Music synthesis
Format MIDI
Interface Command-line interface,
Wikipedia http://en.wikipedia.org/wiki/TiMidity%2B%2B

TiMidity++ is a midi player capable of playing a MIDI format file either directly (to listen to) or else to a digital audio file format (like WAV, MP3, or OGG).