QMediaPlaylist loop in consoleapplication in qt

Sorry if my qustion is lame, but i am new in Qt(and ofc my english level too). So, I have a console application in QT, and i use c++. I would like to create a text-based mini game and i need some background music. I used QMediaPlayer QT class for this, and it worked... but i realise i can not loop the music. I found another QT Class for this the QMediaPlaylist. But the loop function did not work (it played just once). I tried it in a maindwindow application and if i used in the mainwindow.cpp it worked fine. And i dont know why, and where is my fault? I tried this way:

main.cpp

Code:

---

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    Menu();
 
    return a.exec();
}

---

menu.cpp

Code:

---

Menu::Menu(QObject *parent) : QObject(parent)
{
///...........
    this->mp = new MediaPlay();
    mp->PlayMusic("backgroundmusic.mp3");
///...........
}

---

Mediaplay.cpp

Code:

---

MediaPlay::MediaPlay(QObject *parent) : QObject(parent)
{
 
}
 
void MediaPlay::PlayMusic(QString name)
{
    this->playlist = new QMediaPlaylist(this);
    this->settings = new QSettings(QDir::currentPath() + "/settings.ini", QSettings::IniFormat);
    playlist->addMedia(QUrl::fromLocalFile(".//res//"+name));
    playlist->setPlaybackMode(QMediaPlaylist::PlaybackMode::Loop);
 
    this->player = new QMediaPlayer(this);
    player->setVolume(settings->value("iVolume").toInt());
    player->setPlaylist(playlist);
    player->play();
}
 
void MediaPlay::SetVolume(int valume)
{
    settings->setValue("iVolume",valume);
    player->setVolume(valume);
}

---

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follow-up text: I have an exit function in Menu class. In the exit function i call "qApp->quit();" and then not close the console, it sarts playing the background music in loop... but why?