usb media stereo hack

Bought this Mazda used last week and still getting to know it. Recently installed a Kenwood DNX753S seeing previous owner replaced all 6 speakers with upper end Hertz drivers, but had a low end audio head that couldn't take full advantage of them. I also wanted GPS. Love this car. Only 2.0, but...

Hi All, I'm new here - just picked up my 2008 CX-7 a few days ago. I'm enjoying it but being an engineer and a tightwad I can't stand it when there's a display or button somewhere that does nothing. At the moment that's the MEDIA button on the center console. The manual stated that this...