Index: wp-admin/includes/media.php
===================================================================
--- wp-admin/includes/media.php	(revision 19373)
+++ wp-admin/includes/media.php	(working copy)
@@ -1378,15 +1378,8 @@
 <?php do_action('post-html-upload-ui'); ?>
 </div>
 
-<p><?php printf( __( 'Maximum upload file size: %d%s.' ), esc_html($upload_size_unit), esc_html($sizes[$u]) );
-if ( ($is_IE || $is_opera) && $max_upload_size > 100 * 1024 * 1024 )
-		echo ' <span class="big-file-warning">' . __('Your browser has some limitations uploading large files with the multi-file uploader. Please use the browser uploader for files over 100MB.') . '</span></p><p>';
-
-echo ' ' . __('After a file has been uploaded, you can add titles and descriptions.');
-?></p>
-
 <?php
-	do_action('post-upload-ui');
+	do_action('post-upload-ui', $max_upload_size, $upload_size_unit, $sizes, $u);
 }
 
 /**
@@ -2054,6 +2047,23 @@
 add_action('post-plupload-upload-ui', 'media_upload_flash_bypass');
 add_action('post-html-upload-ui', 'media_upload_html_bypass');
 
+/** 
+* Display maximum upload file size 
+* 
+* @since 3.3 
+*/ 
+function media_upload_max_file_size_message($max_upload_size, $upload_size_unit, $sizes, $u) {
+	global $is_IE, $is_opera;
+	?> 
+	<p><?php printf( __( 'Maximum upload file size: %d%s.' ), esc_html($upload_size_unit), esc_html($sizes[$u]) ); 
+	if ( ($is_IE || $is_opera) && $max_upload_size > 100 * 1024 * 1024 ) 
+		echo ' <span class="big-file-warning">' . __('Your browser has some limitations uploading large files with the multi-file uploader. Please use the browser uploader for files over 100MB.') . '</span></p><p>'; 
+ 	echo ' ' . apply_filters('media_upload_title_and_description_message', __('After a file has been uploaded, you can add titles and descriptions.')); ?> 
+	</p> 
+	<?php
+} 
+add_action('post-upload-ui', 'media_upload_max_file_size_message', 10, 4);
+
 /**
  * {@internal Missing Short Description}}
  *