message: Specify full default set of required "audio" options
diff: @@ -90,6 +90,17 @@ int main(int /*argc*/, char *argv[])
  {"vsync", true}
  }}
  },
  + {
  + "audio",
  + {{
  + {"mixer", "SDL"},
  + {"musicvolume", 100},
  + {"sfxvolume", 128},
  + {"channels", 2},
  + {"mixrate", 22050},
  + {"bufferlength", 1024}
  + }}
  + },
  {
  "options",
  {{
  