Cuts

Resample your song into bars (36 bars at a time the cut excess and reigon in the 4k and its perfect). Assign each bar to a pad. Leave one pad without a sample on it in each pad bank. Assign all pads to the same track mute. Play the pad without a sample on it for you blank spaces. This works because almost all of the time the cut is at the end of a bar because its for the delivery of the rappers punchline or impressive lyric. This can be done even easier in a computer audio program like cubase where you can resize the box containing the audio from start or end, or even center by copy, past, and resize.. all according to your vocalists structure.