When I upload a .odt file, I got error message appear: Sorry, for security reasons, this kind of file is not allowed.
You can add following code to wp-config.php, this constant all all file types to be uploaded to WordPress
define('ALLOW_UNFILTERED_UPLOADS', true);
Also you could use following function to allow specific file types
add_filter('upload_mimes', 'extra_upload_types'); function extra_upload_types($existing_mimes=array()){ $existing_mimes['flv'] = 'video/x-flv'; return $existing_mimes; }