Love this plugin. Using it in conjunction with http://wordpress.org/plugins/enhanced-media-library/ that assigns categories to the uploads. However on a client manufacturing site they have large numbers of items (up to 100 PDFs per post/page for their sales reps and distributors). Is it possible to have it so users can mark a checkbox along side each document and have them all download simultaneously with a submit/download button? Note if it helps, all users who download will be logged in to the site as contributors or subscribers. I suspect if could only be done if all the checked files were zipped up on the host first??