Thanks for this question and for the related suggestion in the Reviews section.
Since you say “with Code” and “where to put the hack” it sounds like you’re comfortable with adding some PHP code to your theme, the ad-upload plugin or a plugin of your own. If that’s true, you can hook the WordPress add_attachment action or the wp_update_attachment_metadata filter. These are called late in the process of uploading an attachment and are the hooks MLA uses to do its IPTC/EXIF and custom field mapping.
You’ll have to figure out a way to know that the item being uploaded is a banner ad, of course. Without knowing which plugin you use for that I can’t say how you’d do that.
In MLA, the file that contains the hooks is class-mla-options.php, and the data update is in class-mla-data.php. If all you want to do is add a term to the attachment_category taxonomy, your code can be quite a bit simpler.
Let me know of I’m on the right track or if you had something else in mind. Thanks again for your interest in the plugin.
