http://www.techradar.com/news/sonos-finally-kills-off-cr100-controller-and-long-time-fans-arent-happy >After ceasing the sale of it way back in 2012, Sonos has today announced that it's ending support for the legacy CR100 hardware controller that first launched alongside its multi-room speakers back in 2005.  >From April 2018 anyone who still owns and uses the controller will no longer be able to use it to control their speakers thanks to an upcoming firmware update.