I purchased the mini dsp 6x8 and have been playing with REW to get the feel for things prior to my install. Today I was going to hook up the laptop in the car to take some measurements of the stock system for reference and to get a better feel for the REW software, but realized I have no aux input, nor do I have a CD player. How do I go about using my laptop with REW for my upcoming install? I do have two usb ports that support media/audio. Can I just use a male to male usb cable?