Can't play wave file with QSound on Mac

#include <QApplication>
#include <QSound>
#include <QPushButton>
#include <QDialog>


int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    
    QDialog dlg;
    QPushButton btn("Push me!", &dlg);
    QSound snd("chat1.wav");
    
    QObject::connect(&btn, SIGNAL(clicked()), &snd, SLOT(play()));
    dlg.show();
    return app.exec();
}