Sound icon is visible during presentation. If it annoying you or you want to just hide this icon this is how to manage it.
- Go to ribbon to the Insert tab.
- Click Audio and insert a sound you like.
- Go to ribbon to the Audio Tools menu.
- Select Playback tab.
- Tick Hide During Show checkbox.
Note: Remember to set the sound playing in the background or triggered the other way. It;s impossible to manually play this sound when the icon is hidden.