Increase or decrease volume of music background and voice-over ?

Hello everybody ! Could you please tell me how I can increase or decrease the sound of the background music or of the voice-over ? I have made a Prezi but the background is much too loud, the voice much too quiet. Thanks a lot :slight_smile:

Hello Claire,

yes what Robin says would be the way to go I think - you can see links to some sound editors here -



Thank you very much to you both :slight_smile: I’ll try this way.