tubaguy50035

Put meta fields in attachment settings meta box.
Copy custom_attachment_fields.php_copy to custom_attachment_fields.php, alter the array to add the fields you want, profit.

Attachment Meta

Put meta fields in attachment settings meta box.

Mario Peshev

DevriX

DX Delete Attached Media

Does exactly what its supposed to do. Been looking for a plugin like this for some time.

Great plugin

Automatically deletes attached media from posts and custom post types added via the Media button.

Attachment Meta vs DX Delete Attached Media