links for multiple files in a shared folder

Thanks Lusil I appreciate your quick response!  

I have the link for the folder which works fine.   But what I actually want is the url to any file in the folder to imbed in a webpage to display that particular image rather than imbedding the link to the folder.   Which image needs to be dislplayed is determined by the app, not by the user, so the app needs the link to any file.   

But I think your answer is correct that it can't be done directly, the only way to do what I want is progrmatically through the API and generate urls for each file.