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This does not play anything, does not give an error message, and the article does not give a hint how to track this problem down. --Tstaerk 16:26, 2 May 2009 (UTC)

Now it works but I cannot use the mixer --Tstaerk 10:08, 7 June 2009 (UTC)

It goes easier:

int main(int argc, char** argv)
   QApplication app(argc, argv);
   QApplication::setApplicationName("Phonon Test");
   QWidget widget;
   Phonon::MediaObject* source = new Phonon::MediaObject(&widget);
   Phonon::AudioOutput* sink = new Phonon::AudioOutput(Phonon::MusicCategory, &widget);
   createPath(source, sink);
   return app.exec();