//QString url;
    url = ":/new/prefix1/a.mp3";

    //Phonon::MediaObject *music;
    music = Phonon::createPlayer(Phonon::MusicCategory, Phonon::MediaSource(url));

    //file exists, therefore exists is returned to the console
    if(QFile::exists(url))
        qDebug("exists");
    else
        qDebug("doesn't");

    //works if user selects the file:
    url = QFileDialog::getOpenFileName(this, tr("Select Music Files"), QDesktopServices::storageLocation(QDesktopServices::MusicLocation));

    music->setCurrentSource(url);

    music->play();

    //no error is being outputed
    qDebug(music->errorString().toAscii());