I include the qsound.h on OS X in a file I compile with the -pedantic option. This results in

In file included from /Users/rms/Work/build/gcc42x64/5.0.0/master/src/wrappers/qt/squishidl_qsound.h:4,
from /Users/rms/Work/build/gcc42x64/5.0.0/master/src/wrappers/qt/squishidl_qsound.cpp:1:
/usr/local/Qt-5.0.0-gcc42x64-framework/5.0.0/clang_64/lib/QtMultimedia.framework/Versions/Current/Headers/qsound.h:60: error: comma at end of enumerator list

So please change

enum Loop

;

to

enum Loop

;