As some of you may know, Google have introduced a new Chromecast. It comes in two flavours, one with an hdmi output, primarily intended for tv/movie streaming. The other (Chromecast Audio) has both an analogue and an optical digital output. Both can serve as a very covenient way to stream music. The smartphone or tablet is used to make the connection with the source, but after that the Chromecast communicates directly with the source, so you can turn off your phone or tablet. All it needs is wifi (with an adaptor the streaming can also be done through an ethernet connection if the wifi is less than perfect, however). For now there is no multiroom facility, but this has been promised for later in the year. Apparently there is support for Spotify, but also for Qobuz and many other sources.
The Chromecast audio seems to be a very cheap ($35 in the US) and ultra convenient way to add audio streaming to a stereo system. I think it is particularly attractive to those of us who have high end systems without modern connectivities. It supports resolutions above CD red book for anyone who believes in the benefits of those. The digital output should make it completely transparent, but the inbuilt dac is also quite ambitious.
I am in Princeton for the fall, so I am postponing buying one until I am back home at Christmas. I wonder if others have already experimented.