Once you are in the library make a right and go through the door to the room with the glasses. Now make a right to leave the area and wait in the doorway.
Turn around so that you are facing the open doorway. Walk towards the two open white doors. Walk through the doors. Proceed down the hall until you reach an open doorway on your right. Stop and turn ninety degrees until you are facing the open doorway. Walk through the open doorway and stop. You are in a large room, and there should be a large table in front of you.
walk away from piano through double doors with bookshelf on left, turn right and stop in doorway.