Hi there,

It is possible that your sound was inadvertly turned to mute or your audio level in the videocam was low when you did the recording. Check your timeline arranger. On the far left you will see two letters "S" and "M". If the letter "M" is highlighted, your audio is set to mute. Try clicking on it once to remove the hightlight. If the letter "S" is hightlighted then your video will be blank/hidden. The second option is to try and "normalize" the audio. Select all the audio tracks (turn yellow) Right click on the audio track to bring out the dialog and click on normalize ( or Shift+N). Any of this steps might solve your problem.