Hello! Soo i got this droid bionic with a 16gb micro sd card in it and i have moved all my music to the microsd card.. now the music on my micro sd card will play out my phone speakers and the 2.5mm jack but however when i try plugging it into a car stereo via usb the only songs that play are songs that i have downloaded to my internal storage.. any solutions on how i can make it so songs will play from the micro sd card via usb????? PLEASE HELP!!