I have the standard infotainment system (non NAV) I don't listen to XM, or FM, but rather dump my extensive collection on a USB stick. Who do I complain to about how the file navigation does not show individual folders but rather lists the entire library as a linear list of hodgepodge. This also includes the annoying source change back to XM satellite when I shut off the car. When I turn on the car, I get the XM source again even though I told the system to start the USB immediately on power up, this action switches over but after 10 seconds or so. At least the system remembers what song location it left off with.