picture link: https://drive.google.com/file/d/0B4K...it?usp=sharing
This box basically creates a wifi network and then sends (lossless) audio out via an 1/8 in. audio output:
I'm using Airstream (https://play.google.com/store/apps/d...rtunes.android), which I've found works better than AirAudio.
I'm also running a Tasker sequence, so when the Wifi box boots up, the Nexus 5 automatically opens my music app and sets the system volume to an appropriate level.
All in all, it's pretty smooth.
I think it's worthwhile for at least two reasons: 1) you can charge your phone without getting that ugly interference with an audio cable plugged in. 2) it's much louder than the output of the nexus 5 itself, so it's basically like having an amp.