TiMidity++ is an open source MIDI to WAVE converter and player. It uses Gravis Ultrasound-compatible patch files and/or SoundFont Banks to generate digital audio data from general MIDI files. The audio data can be played through any sound device or stored on disk. On a fast machine, music can be played in real time. TiMidity++ is written in C and runs under Linux, FreeBSD, HP-UX, SunOS, MacOSX, and Win32, and porting to other systems with gcc should be easy.