When I'm playing music from my iPhone 5 via USB connection, I'm unable to force other audio (i.e. internet radio apps) from my phone to play through the car stereo. I can launch for example the Live365 app, and it will start streaming for about 1 second, then the normal iPod music on my phone overrides and starts to play.
This was not the behavior when I used the Media cradle + iPhone 4 on my 2012 M3 with Nav.
Does anyone know of a workaround that will let me keep my phone connected via USB?