I know there have been many threads on this, because I’ve been scouring them looking for info on how to get audio (music, audio books etc.) from my phone through the car radio. I’m not sure if this will help you, but this is what worked for me. I have a 2013 Countryman without Mini Connected, so I only have Bluetooth capability for calls. Previously I’ve just been using the y cable (usb & aux) to 30-pin connector. When I got my iPhone 8 Plus last year I had to buy the conversion lightning cable for it. Now, however that cable is fraying and I don’t want to spend either $30 to replace it (2nd time) or $100 for a new lightning y cable, since what I really want is Bluetooth. Based on previous comments I purchased the Bovee 1000 wireless Bluetooth Adapter with the 30-pin connector. I simply plugged it into the original y cable, synced with my phone, and it works PERFECTLY, with music, audio books, podcasts, etc. so far it syncs automatically every time I get in the car.