Audio is the missing element in computing today to the same extent it was the key missing element to movies in the early 1920's. Take it to the bank. It's not your enemy either, but you cannot count on just anything appearing on the computer being insanely great. The computer is a natural impediment to communication, an obstacle, for the most part, to be overcome. So overcome it, don't pander to it.
All successful products begin with words, and one or more compelling stories It has always been so.
Media are used to tell stories. Sometimes the stories are highly specialized, sometimes highly contextualized, but stories nonetheless. Stories about growth, about change, about evolution, about description, about relationships - among people, among inanimate objects, among the elements of nature. These stories always, always begin in our heads as words. They are always reducible to the high concept, the description of the premise, the easy precis.