Support:kb403872 No playback of Dolby Digital (AC3) audio


 * No playback of Dolby Digital (AC3) audio in Premiere Pro CS3
 * When you play a file whose audio component is in Dolby Digital (AC3) format in Adobe Premiere Pro CS3, you do not hear the file's audio. When you place the file on the Timeline, no waveform is displayed in the audio track.