QList<Tomahawk::query_ptr>
PlaylistInterface::filterTracks( const QList<Tomahawk::query_ptr>& queries )
{
    QList<Tomahawk::query_ptr> result;

    for ( int i = 0; i < queries.count(); i++ )
    {
        bool picked = true;
        const query_ptr q1 = queries.at( i );

        for ( int j = 0; j < result.count(); j++ )
        {
            if ( !picked )
                break;

            const query_ptr& q2 = result.at( j );

            if ( q1->track() == q2->track() )
            {
                picked = false;
            }
        }

        if ( picked )
        {
            query_ptr q = Query::get( q1->artist(), q1->track(), q1->album(), uuid(), false );
            q->setAlbumPos( q1->results().first()->albumpos() );
            q->setDiscNumber( q1->discnumber() );
            result << q;
        }
    }

    Pipeline::instance()->resolve( result );
    return result;
}