Hi All, That last few days I've been wondering... the Alpine system offers a "USB" input, besides BT Audio and the iPhone dock in front of the handbrake. But where should I plug in my USB stick to be able to play MP3s from it? Plugging it in into the USB port next to the 12V jack isn't working, and as far as I've read that's for diagnostics only anyway. Any ideas where I should look? Is it even possible? Thanks in advance!