Imovie Sound Question

[Thatxpcguy]

Hello,
I'm using Imovie '08 to edit a video. I'd like to remove the existing sound from certain sections of the video and replace them with my own music. I've uploaded the music, but can't figure out how to lower the existing volume only for certain sections and raise the volume of my music. The ducking feature only seems to let me play my music with the existing sounds and if I try to turn the volume down on the existing sound, it turns down the volume of the entire video.
Anyone have this problem and a solution?

Thanks!

 

[Max.]

If you hover the mouse over the clip you want to edit, in the top left of that clip a dialog box should appear, click that and navigate to 'Audio' or something similar and you will see 'Clip Volume'.