Would it be possible to provide a feature where by an instructor could upload ALL files, but only make them become active one at a time and remove the file (link only) once it is done, but leave it on the server? I think this is kind of available via adding/rmoving recources.
How about a file view. Like explorer so that students can see a main file area, with subdirectories. They would then be anle to navigate to the file they need and then download... all while having the first mentioned feature available?
As a suggestion.
Jeff