Sonos is planning to eliminate the most annoying part of its popular wireless music setup. Currently, if youve got Sonos speakers throughout the house, at least one of them needs to be plugged into your home router to achieve wireless playback and keep everything in sync. Thankfully, Sonos has figured out how to remove the bothersome requirement altogether. The new approach involves setting up one of Sonos speakers with a smartphone and entering your Wi-Fi password to link everything together.