Throughout this blog, I will be posting links to articles that lay out the basics of production audio. Since I'm pretty damned lazy, I will be posting them as I find them, rather than summarizing and critiquing in one big post. So there.
First up: "Location Sound: The Basics and Beyond", by Dan Brockett, one of many useful "white papers" on techie DV/production/post subjects available at kenstone.net.
"...Four points to remember about sound for picture
1 . The principles of location sound are the same for almost everyone shooting anything.
2 . No matter who the audience is, at the very least, they expect "transparent" sound
3 . Sound conveys emotion - picture conveys information
4 . The better your soundtrack, the less it is consciously noticed"
A very good starting place.