Roon

[Hifi_swlon]

My Roon Server connects to  a Raspberry Pi 2 with a Hifiberry Digi+ board (has an optical output) connected to the optical input on the Dialog.

The Rpi2 is running Picoreplayer - https://sites.google.com/site/picoreplayer/home

Roon connects directly to the Picoreplayer using Squeezebox mode.  Upto 192/24 (which is the max the Hifiberry board and Dialog can do anyway)

Have no real idea with this box really do...but it seem to be doing something quite good http://www.sonicorbiter.sonore.us/

It will act as a Roon server similar to Aries using optical out to Dialog. Roon will see it and you will be able to stream using roon. Its probably the cheapest way to do it.

If you're not too worried about high samples rates, Roon plan to implement ChromecastAudio as an endpoint too.  I'm using one for radio (optical into a D200) and its a neat little device.  Not as powerful/flexible as a Raspberry Pi or Cubox (Sonic Orbiter) type solution, but very simple/tidy and cheap!

Of course, Roons own software for using a Raspberry Pi will also be out around the same time so a few options are on the horizon and will be cheaper than the Sonore product if you don't mind a bit of DIY - and the DIY will be fairly minimal as Roon plan to release downloadable images for the platforms so will be as simple as putting on an SD card and plugging in. (Hopefully)

Obviously the Sonore will work out of the box, will have been tested under many conditions, and will come with support - if these things are important to you - I know not everyone likes tinkering….