I don’t know what foot pedal is used, but you can use a laptop with Ableton Live software with MIDI Translator to do the live-looping thing (there’s some slightly technical info about halfway into that vid).

For card stunts, students each have a sheet of paper custom printed for the individual seat, that says things like:
1. Green
2. Blue
3. Red
…and so on. Then the mic man(/woman) calls out the numbers.

Sneak into the student section and do the card stunts one game. It’s fun!

Live 105 is playing Starlight. Live 105 has an online stream, which I believe can be listened to anywhere in the U.S….