as neat as that music playing robot can be I essentially already have it through google chromecast. Pull up my phone, "Okay google play ..." , enable chromecast to my 7.1 speaker system = win.
there is potential for a friendly robot to greet people as they enter the home though I can imagine such things being immediately replaced by VR (virtual reality) headsets. Forget having a physical object that costs tons of robotic research and money to build. Just jump into a cgi animated personalized, customized companion that could exist anywhere inside and outside the home. (tamagotchi is making a comeback)
as I said the robot is neat but I feel the world has already stepped beyond; the robot just is not practical...unless you need it to cook meals for you or something