Imovie putting unwanted fades on audio clips

Hi iMoviers,

I am trying to use iMovie to edit a playlist of songs from my music library into a single track to play back at the high school Lacrosse games. I am editing the songs to make them shorter and editing parts of one song into another. I have multiple audio tracks running. But I am having a problem. An example: I am using a clip of the drum intro to Paint It Black. iMovie is putting a fade in and a fade out on the clip. I have used the controls on the clip to be sure that there is a zero-duration fade in, but still, it's fading in and then out.

Further example: I clipped out a single boom-boom-clap from the intro to We Will Rock You. No fade in or out. Then I copied the clip and pasted it into a track, and the copy has a fade in and out. Does anyone have a clue for me? Thanks.