Is it possible to pull any metadata (other than title) from the items as they are added to a poster? We’re running v. 2.3.1.
What’s displayed on Posters is controlled by the plugin’s views/public/posters/show.php view.
You can make a copy of that file and put in your theme at posters/posters/show.php (yes that’s “posters” twice). Then you can edit your copy in the theme and change or add to what’s displayed (look for instances of array('Dublin Core', 'Title') to see where the title’s currently being used).