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Yes, you can synchronize Christmas lights with music to create a DIY light show. To do this, you will need several components. For hardware, you'll need standard holiday lights, decorations, lawn ornaments, tools, outdoor-rated extension cords, a computer, and a light show control system or digital controller. You will also need specialized software to program the show; popular options include Light-O-Rama (LOR), Vixen, xLights, and Animated Lights. Some, like Vixen and Animated Lights, are considered more beginner-friendly. The process involves using the software to program your lights, choosing an audio method such as speakers or an FM broadcast, and testing the entire system to make sure it's working correctly before the show.

No, you should not leave LED Christmas lights up all year. While the LED lights themselves are very durable, their wiring and casings can be as vulnerable as any Christmas lights. They’re subject to drying out, experiencing cold or sun damage that causes them to crack, and even damage caused by gnawing pests. (The same is true of incandescents.) If you want your lights to last the years that they’re rated for, bring them inside after Christmas is over. 

Good news, Christmas lovers: you can keep your lights up all year, provided you choose the type. It's critical that you choose holiday lights made for outdoor use, as these can withstand winter weather conditions. In addition, it's best to use LED lights instead of incandescent ones. LED bulbs can withstand temperature shifts and are energy efficient. 

If you are considering leaving your holiday lights up year-round, ask your lighting installer about permanent installation. This project costs around $3,500 but gives you about six to 10 years of LED lights and adds a pleasing aesthetic to your home.

Yes, tackling blown fuses and broken light bulbs is definitely safe. Fixing the wiring on a strand of Christmas lights isn’t a good idea, though, because of the danger of shock and fire. However, if you don’t feel comfortable working with any type of electricity, consider hiring a professional Christmas light installer to manage the job safely and efficiently.