I use P4A a lot. One thing I've found though is that the default File Manager which comes with it's implementation of FCKEditor is a bit basic for my customers.

As a result, I now use TinyBrowser as a replacement. This article outlines how to implement it.

First off, download the latest TinyBrowser from http://www.lunarvis.com, currently this is v1.41.

Extract the contents of the TinyBrowser download into
./themes/default/widgets/rich_textarea/editor/filemanager/browser/tinybrowser

Edit ./themes/default/widgets/rich_textarea/rich_textarea.php and place the following code inside the first PHP code block:


// Introduced by Fear of Mice to support tinybrowser
$mydir = P4A_UPLOADS_DIR. '/' . $this->getUploadSubpath(); //set
$prep = false;
if (substr($mydir, 0, 7) == 'http://' || substr($mydir, 0, 8) == 'https://') { //Strip_Slashes
$prep = TRUE;
}
$mydir = str_replace('https://','',$mydir);
$mydir = str_replace('http://','',$mydir);
$mydir = preg_replace('|(/)+|','/',$mydir);
if($prep === TRUE) {
$mydir = prep_url($mydir);
}
$mydir=base64_encode($mydir); //encode it


then replace:

rte.Config['LinkBrowserURL'] = rte.BasePath + 'editor/filemanager/browser/default/browser.html?Connector=<?php echo $connector ?>';

with

rte.Config['LinkBrowserURL'] = rte.BasePath + "editor/filemanager/browser/tinybrowser/tinybrowser.php?path=<?php echo $mydir ?>";

That's it. You should now have a nice File Manager which supports multiple uploads and thumbnails.