The problem is the way that All in One SEO is set up. It assumes that you always attach your media files to a post or page. Simple way is to attach them to a post or page and it will make your attachment title be “PostName AttachmentName – Blogname”.
The other way is also easy, but you have to make a change to the plugin. You open up the aioseop.class.php file, and find this chunk of code:
else if (is_attachment()) {
$title = get_the_title($post->post_parent).' '.$post->post_title.' – '.get_option('blogname');
$header = $this->replace_title($header,$title);
}
The problem with this setup is that it grabs the parent whether or not it is a child. If it has no parent, its parent title is its own title, hence the double title. To remedy this, we can add an if statement to check whether or not it has a parent to avoid the double title. So the code would look like this:
else if (is_attachment()) {
if(get_the_title($post->post_parent) != $post->post_title) {
$title = get_the_title($post->post_parent).' '.$post->post_title.' – '.get_option('blogname');
} else {
$title = $post->post_title.' – '.get_option('blogname');
}
$header = $this->replace_title($header,$title);
}
Then you just upload this to the All in One SEO plugin folder and your problem should be fixed.
Hope that helps.
{R:S}