Advise about a 'real' file manager compatible width GP

Hello.
( I'm from Sweden, so excuse my grammar)

I am serching for a file-manager plugin, that has a real file-path to its folder.
(If I create a sub-folder in WordPress and put a pdf-file in to the folder, i want
the folder to appear in file-path to the pdf-file)

On Internet, there are many media- and file-mangers that organizes media/files.
But in the end, the media/files fore these plug-ins are located in a big 'pool'.

The website i am building is the main page for our organisation and local members will have
the opportunity add there own pages/bloggs in a subsection.
Therefore whold it be good too have file-structure to be handled moore easily.

If the there is no such as plugin, can you atleast adwise me to a good orgazier-plugin.

Kind regards
Mikael