Does the front camera microphone (the active one) have it's own set of wires in the cable, or is the audio encoded with the video before it's sent from the camera? If the analog mic output is sent back on a separate wire, would it be possible to add a Y-connector accessory the camera 1 connector on the DVR that would add a 3.5mm jack for an external microphone? This would allow placement of a mic somewhere on the bike out of the wind to pick up engine sounds while riding, or in the rider's helmet for narration.. As-is, the front camera mic produces barely audible sound due to being encased in the sealed aluminum case. (Ideally, the Y cable would also have a volume control, or have a volume function added to the firmware.) I suppose I could drill a hole in the camera housing near the internal mic, then cover it with a thin, flexible diaphragm to let the sound in, but keep the water out..