Some bugs and a feature request

Recently I installed FG and found the following bugs and solutions:
1. in function theme_flash_gallery: the call to "_image_get_dimensions" has been changed into "image_get_sizes"
2. in function flash_gallery_is_jpg: the test on the extension should be: if (($info['extension'] == 'jpg') || ($info['extension'] == 'JPG'))
3. in function flash_gallery_image_url: if you have the private download enabled, no picture is shown. After removing the call to "file_create_url" it works allways.

I also have a feature request:
Now every visitor can see the gallery. I need the option to set more permissions: I like to restrict the view to certain roles only.