Currently, the shares configuration only provides a way to configure client shares. We need a switch in the shares overview to show/add/edit/delete also server shares. I think the config screens should look almost the same, there should only be a sort of tab-control to choose between the client's and the server's shares in the shares overview screen. The add/edit/delete buttons will then work for the selected mode (client or server). The model will work the same except for the methods UpdateMediaProvidersList, RefreshMediaProviderPathList and some other methods using the MediaProvider property of the model.
To be able to configure the server's shares, we need additional methods in the content directory interface to list available media providers and to browse the contents of a media provider on the server. Those functions will be created explicitly for the shares configuration in the server.

This seems to be the only way to go, as we absolutely need a way to configure the server's shares via the client's GUI.