This file is taken from the SDL_mixer distribution. We use it on Windows,
where we could not find a free, simple, small command line tool to play .wav,
.ogg and .mp3 files.
On Linux, the system-wide installed sox is used instead.
I use this command to compile playmus.exe
wine gcc playmus.c -o playmus.exe -I'C:\SDL\include\SDL' -L'C:\SDL\lib' -lmingw32 -lSDLmain -lSDL -mwindows -lSDL_mixer
This requires the development versions of SDL-1.2 and SDL_mixer-1.2 to be
installed accoring to this guide.