[hamxiaoz]

That means the music app needs to support chromecast, right?

[Relys]

I believe that is the case. I highly recommend just purchasing an RPI 2 and throwing the OSMC distro (Debian+Kodi) on it. Kodi supports the AirPlay protocol, so once you enable it in services you can use https://play.google.com/store/apps/details?id=eu.airaudio&hl... and basically pipe AUX out from your phone to multiple devices on your network. :)

This obviously requires the dependency of your phone, but I prefer the flexibility.

[hamxiaoz]

That sounds cool. So basically I don't need the chromecast audio if I have the PI, right? I like the iOS' system level of audio output (AirPlay) and didn't know Android is flexible enough that an app can do that!

[kingosticks]

Last time I looked at doing something like this I needed to root my phone in order to pipe everything. Is this no longer the case?

[guyzero]

Chromecast audio supports audio mirroring