Thank you for your inquiry. The Wave SoundTouch Music Systems cannot broadcast the CD, AM/FM, and auxiliary sources, to any other SoundTouch speakers. These sources are designed to be played on the Wave SoundTouch Music System only.
However, any of the SoundTouch sources found within the SoundTouch Application (Spotify, Deezer, vTuner Radio, and more) can be played on both your Wave SoundTouch Music System, as well as other SoundTouch speakers, simultaneously. You can also connect Bluetooth enabled devices (smartphones, tablets, etc) using Bluetooth. Bluetooth sources can be rebroadcasted to multiple SoundTouch speakers.