(PHP) MusicStreamByName

<?php

    $pesquisa = str_replace(' ', '+', $_GET['q']);
    $musica = file_get_contents('http://search.4shared.com/q/CCQD/1/music/' .$pesquisa);

    $pos = strpos($musica, "showMediaPreview(event, '") + 25;
    $resto = strpos($musica, "/preview.mp3") + 12;
    $link = substr($musica, $pos, $resto-$pos);
    echo $link;
?>