<?php

// array just for this sample test
$dados = array(1, 2, 3);

$playersHtml = '';

// set increment to 1 (first player)
$i = 1;

// cycle thru each data entry to prepare the players
foreach ($dados as $player) {

    // html part
	$playersHtml.= '
	<div id="jquery_jplayer_'.$i.'" class="jp-jplayer"></div>
    <div id="jp_container_'.$i.'" class="jp-audio">
       Aqui fica conteúdo do player nº '.$i.'.
    </div>';

    // increment varaible
	$i++;
}

echo $playersHtml;