Phonon skipping two tracks

[matio]

I'm trying to make a media player, the main problem at the moment is that when the user presses the next button it skipps two tracks instead of one. I think this is to do with the signals so I added blockSignals(true), but it still doesn't work:

void MainWindow::nextFile()
{
 
    int index = sources.indexOf(mediaObject->currentSource()) + 1;
 
    if (sources.size() > index) {
         mediaObject->stop();
         mediaObject->clearQueue();
         mediaObject->blockSignals(true);
         index = sources.indexOf(mediaObject->currentSource()) + 1;
         mediaObject->setCurrentSource(sources.at(index));
         mediaObject->blockSignals(false);
         mediaObject->play();
         setLabelNowPlaying();
     }
}

void MainWindow::nextFile()
{

    int index = sources.indexOf(mediaObject->currentSource()) + 1;

    if (sources.size() > index) {
         mediaObject->stop();
         mediaObject->clearQueue();
         mediaObject->blockSignals(true);
         index = sources.indexOf(mediaObject->currentSource()) + 1;
         mediaObject->setCurrentSource(sources.at(index));
         mediaObject->blockSignals(false);
         mediaObject->play();
         setLabelNowPlaying();
     }
}

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