Sans bricolage et le moins cher, un Google Chromecast-Audio. Un aperçu :
http://www.cnet.com/products/chromecast-audio/
https://www.ifixit.com/Teardown/Chromeca...89#s108843
http://www.cnet.com/products/chromecast-audio/
https://www.ifixit.com/Teardown/Chromeca...89#s108843