Answer:
get a recording of the sound bite you want-and import it into an software editing program like cubase, cool edit pro, etc... crop the pieces you don't want and save the file. import or open your song and then `drop' in your edited sound bite to the place you want it, save. done.
if you wanted to do in a live capacity follow the first steps and then export edited file as a .wav or mp3 etc...load it into a program that allows you to trigger (play) the sound bite when you want (you can do this with a midi keyboard or serato, even virtual decks will do). when required trigger sound bite. done. ILLZ!