I don't know if you have the translation. Here it is.
<?php
/**
* i18n/es/main.php
*
* Copyright © 2006 Stephane Gully <stephane.gully@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* English translation of the messages (utf8 encoded!)
*
* @author Stephane Gully <stephane.gully@gmail.com>
* @translated by Jose Juan Calvo<josejuancalvo@gmail.com>
*/
// line 45 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["My Chat"] = "Mi chat";
// line 201 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s not found, %s library can't be found."] = "%s no encontrada, la libreria %s no se ha encontrado.";
// line 355 in phpfreechat.class.php
$GLOBALS["i18n"]["Please enter your nickname"] = "Por favor introduce tu nickname";
// line 565 in phpfreechat.class.php
$GLOBALS["i18n"]["Text cannot be empty"] = "El texto no puede estar vacio";
// line 392 in phpfreechat.class.php
$GLOBALS["i18n"]["%s changes his nickname to %s"] = "%s ha cambiado su nickname a %s";
// line 398 in phpfreechat.class.php
$GLOBALS["i18n"]["%s is connected"] = "%s está conectado";
// line 452 in phpfreechat.class.php
$GLOBALS["i18n"]["%s quit"] = "%s se ha desconectado";
// line 468 in phpfreechat.class.php
$GLOBALS["i18n"]["%s disconnected (timeout)"] = "%s se ha desconectado (timeout)";
// line 262 in phpfreechat.class.php
$GLOBALS["i18n"]["Unknown command [%s]"] = "comando desconocido [%s]";
// line 149 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s doesn't exist: %s"] = "%s no existe: %s";
// line 180 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["You need %s"] = "Tu necesitas %s";
// line 241 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s doesn't exist, %s library can't be found"] = "%s no encontrada, la libreria %s no se ha encontrado";
// line 280 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s doesn't exist"] = "%s no existe";
// line 433 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s directory must be specified"] = "se debe indicar el directorio %s";
// line 439 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s must be a directory"] = "%s debe ser un directorio";
// line 446 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s can't be created"] = "%s no puede ser creado";
// line 451 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s is not writeable"] = "%s no se puede escribir";
// line 496 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s is not readable"] = "%s no se puede leer";
// line 469 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s is not a file"] = "%s no es un fichero";
// line 491 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["%s is not a directory"] = "%s no es un directorio";
// line 23 in chat.html.tpl.php
$GLOBALS["i18n"]["PHP FREE CHAT [powered by phpFreeChat-%s]"] = "PHP FREE CHAT [powered by phpFreeChat-%s]";
// line 296 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Hide nickname marker"] = "Ocultar los colores del nickname";
// line 304 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Show nickname marker"] = "Mostrar los colores del nickname";
// line 389 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Disconnect"] = "Desconectar";
// line 395 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Connect"] = "Conectar";
// line 427 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Magnify"] = "Magnify";
// line 434 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Cut down"] = "Cut down";
// line 345 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Hide dates and hours"] = "Ocultar fechas y horas";
// line 353 in javascript1.js.tpl.php
$GLOBALS["i18n"]["Show dates and hours"] = "Mostrar fechas y horas";
// line 21 in chat.html.tpl.php
$GLOBALS["i18n"]["Enter your message here"] = "Introduzca aquí su mensaje";
// line 24 in chat.html.tpl.php
$GLOBALS["i18n"]["Enter your nickname here"] = "Introduzca aquí su nickname";
// line 93 in phpfreechatconfig.class.php
$GLOBALS["i18n"]["Error: undefined or obsolete parameter '%s', please correct or remove this parameter"] = "Error: undefined or obsolete parameter '%s', please correct or remove this parameter";
?>