void MainWindow::changeAudioChannels(bool checked, int channels)
{
    if( checked ) {
        Settings.setPlayerAudioChannels(channels);
        setAudioChannels(Settings.playerAudioChannels());
    }
}
void MainWindow::changeAudioChannels(bool checked, int channels)
{
    if( checked ) {
        Settings.setPlayerAudioChannels(channels);
        setAudioChannels(Settings.playerAudioChannels());
    }
}