[QT[ Directory Crawler

#include <QCoreApplication>
#include <QDir>
#include <QDebug>

void printDir(const QDir& dir, const QString& indent)
{
    QStringList nameFilter;
    nameFilter << "*.mp3" << "*.ogg" << "*.wav";

    QFileInfoList list = dir.entryInfoList( nameFilter, QDir::Files | QDir::AllDirs | QDir::NoDotAndDotDot | QDir::NoSymLinks, QDir::DirsFirst );

    foreach (QFileInfo f, list){
        if(f.isFile())
        {
            qDebug() << indent << "FILE: " << f.fileName() << " --- " << f.filePath();
        }
        else
        {
            qDebug() << indent << "DIR: " << f.fileName() << " --- " << f.filePath();
            printDir(QDir(f.absoluteFilePath()), indent + QString("   "));
        }
    }
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QDir test("C:\\Users\\kkowalsk\\Downloads");
    printDir(test, QString(""));

    return a.exec();
}