iPhoto & iTunes


I am making a slideshow with iPhoto, with songs from an iTunes playlist. I want to remove things like clapping during the begining of live songs and or just shorten some songs, so I used the start and stop properties in iTunes to crop the song, but when using the song in iPhoto for the slideshow, the original full length song plays. Is there any way to make this work rather than busting out Garage Band and cropping the song?