Volumio is a free and Open Source Linux Distribution, designed and fine-tuned exclusively for music playback. It runs on a variety of devices, typically small and cheap computers like the Raspberry PI, but also on low power PCs, notebooks or thin clients.
By flashing (installing) Volumio on any of this platforms, it will then become an headless Audiophile Music Player. Headless means that the only way to control it will be with another Mobile phone, computer or tablet.
This is made possible by Volumio’s UI: a web applications that runs on any device with a browser, and that allows an easy and intuitive control of your playback sessions. All communications between the webapp and Volumio will happen through your home network.