So here's a question. You and your loved ones are the last one's on earth. Your fully stocked with a cabin in the woods, renewable energy, and food for a life time. The roads are out, and there's no place to get gas.
The remains of a high-end store are 20 miles away. What do you bring home, assuming you have to actually carry it back?
Another key detail is it is the REMAINS of a high end audio store. This leads one to assume it is not habitable and the equipment is in danger of being ruined by the elements, so you have to prioritize what you are taking before it's useless.