$model->setState('newfilenames', $newfilenames);

                $model->getState('newfilenames');

foreach ($files as $key => $file)
		{
			if ($newfilenames[$key] != $file) {
// rename the file
				rename($path.'/'.$folder.'/'.$file, $path.'/'.$folder.'/'.$newfilenames[$key]);
//make sure $file gets replaced so that labels.txt gets written correctly....
				$file = $newfilenames[$key];
			}
		
			if (JFile::exists($path.'/'.$folder.'/'.$file))
			{
				$labels .= $file.'|'.$titles[$key].'|'.$descriptions[$key]."\n";
			}
		}

<label><?php echo JText::_('COM_SIGPRO_TITLE'); ?></label>
	                    <input type="text" name="titles[]" value="<?php echo $image->title; ?>" />
/*addthis*/
			    <label>Filename</label>
	                    <input type="text" name="newfilenames[]" value="<?php echo $image->name; ?>" />
/*addthis*/
	                    <label><?php echo JText::_('COM_SIGPRO_DESCRIPTION'); ?></label>
	                    <textarea rows="5" cols="30" name="descriptions[]"><?php echo $image->description; ?></textarea>

$newfilenames = JRequest::getVar('newfilenames');
$model->setState('newfilenames', $newfilenames);

$max = 0;
			$directory = $path.'/'.$folder.'/';
if (($dir = opendir($directory)) !== false)
{
  while (($filenam = readdir($dir)) !== false)
  {
    $int = intval(basename($filenam));
    if ($int > $max)
    {
      $max= $int;
    }
  }
  closedir($dir);
}
 $filecount = count(glob($directory . "*"));
	 $filename =   $max + 1; 
	if ($filecount>$filename ) {$filename = $filecount;}
	 if(strlen($filename)==1){$filename="0".$filename;}
	 $filename .=".jpg";

$newfilenames= $this->getState('newfilenames');

foreach ($files as $key => $file){
			if ($newfilenames[$key] != strtok(pathinfo($file, PATHINFO_FILENAME), '-') ) {
			if(strlen($newfilenames[$key])==1){$newfilenames[$key]="0".$newfilenames[$key];}
$character_array = array_merge(range(a, z), range(0, 9));
$string = "";
    for($i = 0; $i < 6; $i++) {
        $string .= $character_array[rand(0, (count($character_array) - 1))];
    }
$newfilenames[$key] .= "-" .$string;
				rename($path.'/'.$folder.'/'.$file, $path.'/'.$folder.'/'.$newfilenames[$key].'.jpg' );
			}
		}

<label>Filename</label>
	                    <input type="text" name="newfilenames[]" value="<?php echo intval(strtok(pathinfo($image->name, PATHINFO_FILENAME), '-'));

<label>Filename</label>
	                    <input type="text" class="sigProFilename" name="newfilenames[]" value=""/>