So I bought my JVC head unit right before 3.5 mm aux inputs were mainstream (they were available, but not cheap). My unit has a usb port on the front designed to play media on any storage device (from flash drive up to a portable HDD). I want to avoid the hassle and poor quality of a FM transmitter. So basically I don't have an aux input, or any red/white RCA inputs in the rear of my head unit. I've tried the dock connector but my unit just displays an error. I ordered this usb to 3.5mm data cable for the suffle, think it'll work? Will any docks possibly sort out the error and allow me to use the 30-pin to usb cable?