An enhanced audio mixing, or editing, system characterized by a "mood" controller operable by an editor/user to control the audio mixing of multiple layers of a sound source. A mood controller in accordance with the invention stores one or more moods where each mood comprises a data set which specifies levels applicable to the multiple layers f a specified sound source. The mood controller is configured to allow an editor/user to produce a mix, or audio output track, by selecting a stored mood, or a sequence of stored moods, for application to, i.e., modulation of, a selected multilayer sound source.