How can I hide wires to my tv, dvd player, router in my living room?

Wj
by Wj

I have 2 five tier shelves beside of my fireplace and my tv is on the wall above the fireplace. The back of the shelves are open and the wires to the tv, router etc. all show. I want to somehow hide these, maybe put them behind the wall and update the fireplace?

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