I was asked in another thread about the audio adapter I use to capture in-cockpit audio. Here's a link as requested, although it's not the exact adapter I have. These work great for capturing everything that comes thru a headset during flight. They have a standard audio mini-plug to go into whatever you're recording with, and straight thru connection from a headset to an aircraft-type jack. I am not endorsing the particular dealer or brand, just the concept. We've had a lot of fun with it.

Jim

http://www.mypilotstore.com/MyPilotStore/sep/1978