I have been trying Digital File Pro without much success. Firstly I set this up on my Mac using my testing server. All seemed OK except that nothing uploads or downloads, so thought this might be something to do with the configuration of the local server.
So have run some live test on a testing server via my hosting facility, and whichever way I have tried to configure the page it shows completely blank via either Firefox or Safari. Viewing the source indicates that the page breaks wherever the generated php code falls. I moved it around a few locations, and the supplied documentation falls short of showing how code should be inserted into the document.
I am happy in HTML and CSS but know precious little about php, the literature said I didn't have to know php, but that appears optimistic.