This is adapted from the example code and sends the power and play button with 1 second delay in between.
#include <IRremote.h>
IRsend irsend;
void setup()
{
}
void loop() {
int i;
for (i = 0; i < 3; i++) {
irsend.sendNEC(0xE144827D, 32); // Power button
}
delay(1000);
for (i = 0; i < 3; i++) {
irsend.sendNEC(0xE1447A85, 32); // Play button
}
delay(1000);
}