When the resample feature in Live is used it will take all the outgoing audio from your master channel and sample it down to a single audio file. This will allow you more freedom to not only create interesting transitional effects, but create possible glitch effects throughout your song.
Something that was overlooked in the video is the use of panning on the resampled audio. The panning is what allows for the bouncing effect across the stereo spectrum as the transition occurs. This was achieved using the pencil tool and really high values to quickly bounce pan across the stereo field. You will be able to see this in panning section of the automated track in the video.
If you have any questions or feedback feel free to leave comment below, and if you enjoyed what you heard you can also check out and download the song below!