This is a Chord Mojo docking station with a Raspberry Pi Zero. Charge your Mojo, stream music, create a media server.
I use a minimal linux version from rune audio (http://www.runeaudio.com/) to stream music from my nas to the Mojo, using my tablet with bubbleupnp to control the dnla renderer.
Of course you can use any Linux version that works with the Raspberry Pi Zero.
2 micro usb male plugs
1 Raspberry Pi Zero 1.3 board
1 HubPiWi 1.3 board
1 8 gb micro sd card with rune audio image
Soldering experience for small parts needed, experience with the Raspberry (flash sd card, setting up, config adjustments).
Look at http://www.runeaudio.com/forum/raspberry-pi-zero-support-in-0-4-t3711.html for Rune Audio and Raspberry Pi Zero.