Paulpen, I'm of the same boat as you with no iPod (and never will) and use my android phone only as a phone. BUT I do not have a Nav system NOR CD changer so I was able to buy a GROM unit and thats how I run my MP3's (usb sticks). If you are ok with loosing the cd changer, its an easy swap to add the GROM in... as for what you're asking, I do not know anyone who has achieved that since there are only so many ways to connect in.

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S