What is the easiest and classiest way to hide cables on a wall mounted TV? Going through the wall is not an option as it's above the fireplace. - Quora
Legrand Wiremold CornerMate Cord Cover 5 ft. Channel, Cord Hider for Home or Office, Holds 3 Cables, White C40 - The Home Depot
Stalwart Under Desk Cable Organizer Cord Cover in Black NNGSR89 - The Home Depot
How to Hide Wires - How To Videos and Tips at The Home Depot
Legrand Wiremold CordMate Cord Cover 5 ft. Channel, Cord Hider for Home or Office, Holds 1 Cable, White C10 - The Home Depot
Southwire 250 ft. 12/2 Solid Romex SIMpull CU NM-B W/G Wire 28828269 - The Home Depot
Commercial Electric TV Multimedia Recessed Box 5053-WH - The Home Depot