We just finished this downtown Austin, TX condo project featuring a HDTV wall mount and surround sound system.  The client did not want to see any equipment so we hide everything inside of a modern media cabinet and used an ir kit to keep it out of sight.   This kit allows the client to still use their universal remote without needing to have line of sight to the equipment.  The wiring for the HDTV wall mount and on wall speakers is all concealed in the wall providing a modern, clean look.