I recently bought a house with a mostly finished addition onto the living room. The problem is that they left the exterior windows and extra large sliding door. I plan to remove the windows and finish sheet rocking. My dilemma is what to do about the slider? I would like to preserve the view to the backyard that the slider allows, plus I like the idea of being able to have a way to close the room off sound wise as we are using the addition as a playroom. I am looking for ideas to make the transition from one room to the other look more polished.