In the video we just used the audio component directly, in order to start off with a given value we’d need to use a script. In the script you’d get the default value of the audio then assign that as the value to the slider from the Start or Awake method. Then you’d have another method that updates the audio value based on the slider value. So essentially you set the value to the slider initially then the slider sets the value of whatever you’d want to change afterward.