Dennis, here's my .02.
I just did a cross country and tried out my new iPod. I could hear the music (no speaking stuff in the plane, too disctracting). The quality was OK, but I don't think I would get too upset about the stereo or mono. There is just too much going on, with the noise, radio, flying and navigating, to make a whole lot about the quality of the music. When things get busy, the first thing to go is the music.
