Think Apple did something, carplay or whatever? Allows you to play music automatically, via Bluetooth and other things. Not sure tho
if you have a usb port on your stereo you can try plugging in one of those usb bluetooth things
http://www.amazon.com/Okra-Portable-Bluetooth-Receiver-Headphones/dp/B00N9HDQKW/ref=sr_1_10?s=electronics&ie=UTF8&qid=1414632905&sr=1-10&keywords=bluetooth+speaker+adapteris this good?
needs sirius xm :D