New Roku Streaming Stick allows private listening via your mobile device

One of the best features of Roku’s high-end streaming boxes—private listening by way of plugging headphones into the remote control—is coming to Roku’s least-expensive streamer: the new Roku Streaming Stick ($50), which is now available for pre-order. But you’ll need to provide your own headphones, and you’ll plug them not into the included remote but into