There's (both headphones and USB cable helps; that's why I don't consider the "power level decreases while a USB cable is connected" a bug). Though I'm worried packaging "an enabler" for this might make Nokia less inclined to allow enabling it as trivially as currently is (the fmtx is a V4L device!).
And of course, connecting headphones to it makes it _finally_ usable, like they do in every other device with an FMTX I've used, including multiple car GPS devices that you can practically buy in any shop in Spain. I have to wonder if the FCC is really so restrictive.

That's what I was trying to say previously; just wrapping the device with VGA cable seems to do wonders. Of course, this is all very random