Failing to SetFilter of QFileSystemModel for .mp3/.avi files

I need to traverse my drives in system and display only .mp3 and .avi files. basically set the filter to these extensions and display the files in a treeview.

Code:

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QStringList sDriveFilters;
        QString sPath = m_SystemModel->fileInfo(index).absoluteFilePath();
        ui->DriveListView->setRootIndex(m_SystemListViewModel->setRootPath(sPath));    
 
        sDriveFilters << "*.aac" << "*.wmv" << "*.avi" << "*.mpeg" << "*.mov" << "*.3gp" << "*.flv" << "*.mp3" ;
 
        m_SystemModel->setRootPath(QDir::currentPath());
        m_SystemModel->setFilter(QDir::NoDotAndDotDot | QDir::AllDirs );
        m_SystemListViewModel->setFilter( QDir::Files | QDir::AllDirs | QDir::NoDotAndDotDot );
 
        m_SystemListViewModel->setNameFilters(sDriveFilters);
        m_SystemListViewModel->setNameFilterDisables(false);

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If you notice I have set filter as

Code:

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setFilter( QDir::Files | QDir::AllDirs | QDir::NoDotAndDotDot )

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and setNameFilters to sDriveFilters. This displays all the directories in my treeview. Ideally I want it to display only audio/video files.