24. The computer readable storage medium of claim 21 , wherein said augmenting step comprises: detecting a speech ending point in said audio stream at which a speech signal including said first portion of said audio stream actually ends; augmenting said speech signal with one or more audio frames immediately following said user-designated end point to form said augmented audio signal.
25. The computer readable storage medium of claim 24 , wherein said augmented audio signal ends at an audio frame that occurs after said speech ending point, and said speech ending point occurs at or after said user-designated end point.