Roon is a connecting, streaming and music management software that brings multi-room smarts to your hi-fi equipment. It is the brains which tells your music what to do and where to do it – the policeman directing the traffic.
Roon is not a music streaming service in its own right. It does not offer you access to any music service to which you're not already signed up. Instead, it takes control of your internet radio, the music streaming services your subscribe to and your own personal music files, and sends them to audio output devices as controlled on a series of computer, smartphone and tablet apps. It joins the disparate dots of your listening ecosystem, giving you a one-stop-shop to access, control and play everything.
To do that, there are several key parts to Roon's structure: the Roon Core, the Roon app and the audio devices. The Roon Core can be installed on a PC or Mac computer or on a NAS drive. Roon Core requires a fair bit of processing power and many computers and NAS drives are just not up to the task. For those who want the best, most efficient and trouble free way of running Roon Core you need to be looking at a Roon Nucleus to do the job.