Disabled mStereoSeparation and mMaxMixChannels until library is updated on Windows.

src/modules/sound/lullaby/ModPlugDecoder.cpp

@@ -17,7 +17,7 @@
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 **/
-
+#include <common/config.h>
 #include "ModPlugDecoder.h"
 
 #include <common/Exception.h>
@@ -41,8 +41,11 @@ namespace lullaby
 
 		// fill with modplug defaults (modplug _memsets_, so we could get
 		// garbage settings when the struct is only partially initialized)
+#ifndef LOVE_WINDOWS
+		// This does not exist yet on Windows.
 		settings.mStereoSeparation = 128;
 		settings.mMaxMixChannels = 32;
+#endif // LOVE_WINDOWS
 		settings.mReverbDepth = 0;
 		settings.mReverbDelay = 0;
 		settings.mBassAmount = 0;