Только в /inline+: inline-insert-image.tpl.php
diff -p1 /inline/inline.module /inline+/inline.module
*** /inline/inline.module	2011-11-05 06:22:13.000000000 +0400
--- /inline+/inline.module	2012-01-14 16:39:07.000000000 +0400
*************** function inline_theme() {
*** 269,271 ****
        'file' => 'inline.theme.inc',
!     )
    );
--- 269,279 ----
        'file' => 'inline.theme.inc',
!     ),
!     'inline_insert_image' => array(
!       'variables' => array(
!         'item' => NULL,
!         'widget' => NULL,
!       ),
!       'template' => 'inline-insert-image',
!       'file' => 'inline.theme.inc',
!     ),
    );
*************** function _inline_decide_img_tag($file) {
*** 380 ****
--- 388,402 ----
  
+ // Insert integration
+ /**
+  * Implements hook_insert_styles().
+  */
+ function inline_insert_styles() {
+   $insert_styles = array();
+   $insert_styles['inline'] = array('label' => 'Inline');
+ 
+   return $insert_styles;
+ }
+ 
+ function inline_insert_content($item, $style, $widget) {
+   return theme('inline_insert_image', array('item' => $item));
+ }
diff -p1 /inline/inline.theme.inc /inline+/inline.theme.inc
*** /inline/inline.theme.inc	2011-11-05 06:22:13.000000000 +0400
--- /inline+/inline.theme.inc	2012-01-14 16:39:13.000000000 +0400
*************** function theme_inline_img($variables) {
*** 49 ****
--- 49,56 ----
  }
+ 
+ /**
+  * Preprocess variables for the inline-insert-image.tpl.php file.
+  */
+ function template_preprocess_inline_insert_image(&$variables) {
+   $variables['filename']=$variables['item']['filename'];
+ }