How Do You Write for Audio?

It's really become a balancing act of, what do you need to explain? What can you convey with sound effects? And then, if you do want to convey things, how can you do it in the most natural sounding way? Can you have other people comment in interesting ways. In audio, i've found that it sounds a lot more realistic to have people trail off and constantly interrupt each other. You know, if somebody is constantly interrupting someone else, that says a lot about who they are and what they think of themselves as a character. It ends up being a lot less of a tennis match like it would be in a novel,. where this person says a complete thought, often