By Kirk Miller It might not feel like spring, but for those who are looking for a seasonal refresh, don’t limit that shopping spree to your wardrobe. Instead, consider your audio needs. You’re going to be outside more often (for NYers, this might not happen until late April), on the move between work and home and hopefully traveling more. If you’ve been relying on the same speakers, headphones and earbuds during the past two years, it’s a good time to upgrade, thanks to a number of audio discounts available at Best Buy at up to 50% off, many involving some of our favorite brands (Sonos, Sony, …