playmem latency

[capicoso]

Hi. I have this sketch, it's the sample player from the examples;

#include "AudioSampleSnare.h"        // http://www.freesound.org/people/KEVOY/sounds/82583/
#include "AudioSampleTomtom.h"       // http://www.freesound.org/people/zgump/sounds/86334/
#include "AudioSampleHihat.h"        // http://www.freesound.org/people/mhc/sounds/102790/
#include "AudioSampleKick.h"         // http://www.freesound.org/people/DWSD/sounds/171104/
#include "AudioSampleGong.h"         // http://www.freesound.org/people/juskiddink/sounds/86773/
#include "AudioSampleCashregister.h" // http://www.freesound.org/people/kiddpark/sounds/201159/
#include <Bounce.h>
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>

Bounce button2 = Bounce(3, 15);

// GUItool: begin automatically generated code
AudioPlayMemory          playMem1;       //xy=250,561
AudioOutputAnalog        dac1;           //xy=396,551
AudioConnection          patchCord1(playMem1, dac1);
// GUItool: end automatically generated code

void setup() {

  pinMode(3, INPUT_PULLUP);
  AudioMemory(10);
  pinMode(17, OUTPUT);
  Serial.begin(9600);
}

void loop() {

  button2.update();
  if (button2.fallingEdge()) {

    playMem1.play(AudioSampleKick);

    digitalWriteFast(17, HIGH);

  }
  else if (button2.risingEdge()) {
    digitalWriteFast(17, LOW);
  }

}

It plays the file when I press the button, at the same time the sample is played, a led is turned on. Thing is, there's like 7-10ms delay between the led output and sample. The sample is delayed, I don't know if it's the time it takes to access the flash memory. If that's the reason, could I store the sample into ram? Assuming ram is faster... I really need the led output to be in sync with the sample, that led output acts as a trigger for modular synths...
thanks