Why can I not find sound settings for playback videos in the Sony cyber shot camera?

Hey haven’t you looked up in manual for this issue. Everything is clearly mentioned in manual. Whatever, if there are no sound settings, then maybe there is no sound. Not all cameras do videos and those few that do, not all have sound. To those few that do, not all playback sound in-camera. Furthermore, those that do have no sound controls. So, friend I must tell you that video is just a digital camera feature. It's not that functional compared to digital video cameras. Again I would like to repeat that check the manual and you will get to know that if it has the sound option or not? The video may have sound in the computer. So check it out and you can get a manual online also if you do not have one with you.