Hello to all, i have realized my first premium ACF plugin.
Il allows to add a new single file upload field that is external to the WP media core.
Read here for info: http://codecanyon.net/item/rcwd-upload-for-advanced-custom-fields/5078456
And if you buy it, remember that i am always search advices for improvements and new feature.
And.. thanks for the great ACF plugin. N.1 for me!!!
Have a great day from an italian developer