Hello, I am unfamiliar with this with this technique. Is it possible to stream music from the Nexus 7/13 to a car stereo that supports streaming? What about older head units with an AUX IN jack or the rear CD changer connector? Whats the procedure, basically? Is it even worth the trouble? I usually just insert an MP3 disk, and let the music run until it ends, or I stop for something. I have an MP3 player too, and just let it run (it's too dangerous to fool with it while driving.) CDs are limited in capacity to 700 MB, but the tablet has much more, like a flash drive. the only advantage I can see so far is that the tablet is at eye-level, and you don't have to look down at the stereo to change/pause a track. My biggest concern is that I can't hear the navigation commands with the music going.