The international vintage records in the rack are clickable. They are there to alleviate the tedium of the long minutes you will be searching for a solution clicking and dragging away with your mouse . If you take too long, the gramophone will need rewinding with the crank.The object of the puzzle is to lower and fully shut the blinds, later turning off the lamp. The scene will then be fully dark with only the bottle of cognac glowing. If...and when you get there, there will be a glass of this good French Cognac offered to you while a soul-stirring air is played.  The solution can be accessed by clicking on my name 'POIRIER' on the gramophone faceplate  (now I know you will regret not having paid attention in your high school foreign language class!). Good luck and please comment freely below (no censorship!)