Changing audio pitch via stretching

Is it possible for audition to change the pitch of an audio file by stretching the waveform? An old fashioned way of lowering audio pitch would be to stretch the audio file so it would be pitched down. Can I do this in audition by a specific amount of semitones? I know that audition already has a pitch changer that keeps the tempo constant. I would like a more 'simple' way of changing the pitch as described above; that would change the tempo accordingly as well