This is a dedicated network streamer. It includes a built in DAC, pre-amp, networking capability, and some internal software to automatically stream from many services like Spotify, it can use UPnP which allows you to connect between many devices like a NAS (network addressable storage). In addition it can take SPDIF digital inputs from other devices over coax and Toslink or USB allowing you to play from a computer. In addition though separate from all this it has a more recent version of Bluetooth. It also allows you control from a phone app or tablet app. As a for instance you could connect a CD, DVD or Bluray player to the SPDIF inputs and play a spinning CD.
You might find out more here:
https://www.cambridgeaudio.com/usa/en/products/cx/cxn
Now things have moved swiftly in this market, and that device is nearing 4 years old. For instance I don't see that it is capable of being a Roon end point. Roon is a popular music playback software. It can run on a computer, and you select various end points on your network to which you can play files. There are some other softwares that can be used this way.
Still this device is something of an all purpose streaming from any source type of product. It might do what you need.
Also, some receivers (AVRs, even some TV's have some of this streaming capability built right in).
I know this sounds complicated and like it isn't getting you anywhere. If you have a receiver already tell us what it is or check if it has UPnP, or DNLA capability or the ability to connect via ethernet.