Arduino audio playback without SD card

I want to create a circuit that plays audio when it gets power and play another audio by pressing a button. I want to create it without SD card, only using Arduino nano. Library used is PCM. Here is the code example..

#include <PCM.h>

const unsigned char sample[] PROGMEM = {
  0,6,14,22,30,38,46,54,60,68,74,82,90,98,106,114,112,
  };

void setup()
{
    startPlayback(sample, sizeof(sample));
}

void loop()
{
 
}

I want to play another audio by pressing a press button, How can I do it? What will be the code ?