The ZonePlayer 90 lets you play all the music you want, all over your house, on all the audio equipment you already own — your home theater receiver, stereo system, powered speakers, and more. Just connect the ZP90 to any amplified audio device in any room and it’s instantly part of the wireless Sonos system. To start playing music, one ZonePlayer or ZoneBridge must be connected to the router, then all the rest work wirelessly.