I have wifi downstairs which doesn't reach upstairs.
I'm going to send the network upstairs with a powerline adapter.
I have more than one machine upstairs, including the box that contains all my files (so many files!).
I have a TP-LINK range extender that can work as a range extender by picking up wifi and forwarding, or as an access point by connecting via Ethernet.
I want to connect the TP-LINK to the powerline adapter upstairs (because the wifi is too weak to pick up and 'extend') to provide wifi upstairs.
I have mint machines, other Ubuntu-based systems, a Windows XP box (not my fault), phones (Android) and tablets (android) connecting to the system.
How do I share my files across the 2 access points (and thus 2 network SSIDs?) like I currently can across my single network?