You want to insert new records only if no other record with the tuple (artistname,songname,server) (already) exists.
If you create a unique index for these three fields MySQL won't insert a doublet. Then you can either use something like

INSERT IGNORE INTO
  tablename
  (a,b,c,x,y,z) 
VALUES
  (1,2,3,4,5,6),
  (7,8,9,10,11,12),
  ...
  (95,96,97,98,99,100)

ya da bir prepared statement, mesela

$pdo = new PDO("mysql:host=localhost;dbname=test", 'localonly', 'localonly'); 
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

/* test table */
$pdo->exec('
    CREATE TEMPORARY TABLE foo (
        id int auto_increment,
        artistname varchar(64) not null,
        songname varchar(64) not null,
        duration varchar(16) not null,
        url varchar(64) not null,
        server int not null,
        primary key(id),
        unique key (artistname,songname,server)
    )
');

$data = array(
    array(':artistname' => 'Lady GaGa', ':songname' => 'Love Games', ':duration' => '3:31', ':url' => '7e91a5ca16ae', ':server' => 3),
    array(':artistname' => 'DJ Layla', ':songname' => 'Single Lady', ':duration' => '3:20', ':url' => 'f0906a3087eb', ':server' => 3),
    array(':artistname' => 'Lady Gaga', ':songname' => 'Bad Romance (Bimbo Jones Clean Radio Remix)', ':duration' => '3:59', ':url' => '36e77d5a80357', ':server' => 3)
);


/* the "actual" test script */
$stmt = $pdo->prepare('
    INSERT IGNORE INTO
        foo
        (duration, artistname, songname, server, url)
    VALUES
        (:duration, :artistname, :songname, :server, :url)
');
// first run, all three records should be inserted
foreach( $data as $params ) {
    $stmt->execute($params);
}

// second run
// same artist/songname, different server
$newData = $data[0]; $newData[':server'] = 4;
$data[] = $newData;
// and a completly new record
$data[] = array(':artistname' => 'xyz', ':songname' => 'The ABC song', ':duration' => '2:31', ':url' => 'whatever', ':server' => 2);
// again insert all records (including the three that have already been inserted)
foreach( $data as $params ) {
    $stmt->execute($params);
}

/* fetch all records */
foreach( $pdo->query('SELECT * FROM foo', PDO::FETCH_NUM) as $row ) {
    echo join(', ', $row), "\n";
}

baskılar

1, Lady GaGa, Love Games, 3:31, 7e91a5ca16ae, 3
2, DJ Layla, Single Lady, 3:20, f0906a3087eb, 3
3, Lady Gaga, Bad Romance (Bimbo Jones Clean Radio Remix), 3:59, 36e77d5a80357, 3
4, Lady GaGa, Love Games, 3:31, 7e91a5ca16ae, 4
5, xyz, The ABC song, 2:31, whatever, 2

İlk üç kayıtları çoğaltıldığı olmamıştır.

Bu gibi tüm ilgili durumlar için tek bir select oluşturun ve PHP yoluyla Sonuçları doğrulamak:

$sh = "SELECT `artistname`,`songname`,`server` FROM `music` WHERE ";
$pq = ""
foreach($res as $value)
{
if(!get_magic_quotes_gpc())
{
    $value['artistname']    = mysql_escape_string($value['artistname']);
    $value['songname']      = mysql_escape_string($value['songname']);
    $value['duration']      = mysql_escape_string($value['duration']);
    $value['url']           = mysql_escape_string($value['url']);
    $value['server']        = mysql_escape_string($value['server']);
}

$value['artistname']    = trim($value['artistname']);
$value['songname']      = trim($value['songname']);
$value['duration']      = trim($value['duration']);
$value['url']           = trim($value['url']);
$value['server']        = trim($value['server']);

$sh .= $pq . `(artistname`='".$value['artistname']."' AMD `songname`='".$value['songname']."' AND `server`='".$value['server']."')");
$pq = " OR ";
}

$res = mysql_query($sh);

Eğer yazdı seçme sorgusu foreach içinde olamaz, ya da tabii ki her zaman sorgulamak gerekir. Uzun bir WHERE yan tümcesi içine $ res çevirin:

$sql = "SELECT `artistname`,`songname`,`server` FROM `music` WHERE FALSE ";
foreach($res as $value)
{
    // ... 

    $sql .= "OR (`artistname`='".$value['artistname']."' AND `songname`='".$value['songname']."' AND `server`='".$value['server'].")";
}

ve daha sonra veritabanı karşı bu sorguyu çalıştırmak ve INSERT sorgusu oluşturmak.