Bluetooth headphones are all the rage. With Apple and others dropping the trusty old 3.5mm headphone jack, you can either carry an extra, easy-to-lose adapter around, or you can spend a few bucks on a decent set of wireless headphones. The Audiofly AF100W bluetooth headphones are an in-ear set that sit comfortably and have a flexible over-the-ear design that keeps them in place while you're exercising to some tunes. But how did they sound?