Introducing Google Cast for audio
I don't want to cast from the cloud. Just make the device able to receive any media from my LAN!!it's nice that the dongle can stream from the web, but it's way more useful to make the device aware of upnp/dlna devices over my local network.Because of this I've moved to raspberry which  - exposes itself over the network as a upnp device
  - plays remote media in the main TV
  - acts as a nas, it can stream to kids' room
  - downloads media via torrents (that I can remotely control)

Plus it's a fully Linux environment that I can fine tune as desired