 #define BOUND MAXVOL
 
 typedef enum {
-  MP_PLAY = 'a',
-  MP_PAUSE,
+  MP_PAUSE = 'a',
+  MP_RESUME,
   MP_BACKWARD,
   MP_FORWARD,
   MP_PREV,

      player.setVolume(vol);
      break;
    case MP_MODE_NORMAL:
      player.setPlayMode(PM_NORMAL_PLAY);
      break;
    case MP_MODE_SHUFFLE:
      player.setPlayMode(PM_SHUFFLE_PLAY);
      break;
    case MP_MODE_LIST:
      player.setPlayMode(PM_REPEAT_LIST);
      break;
    case MP_MODE_SINGLE:
      player.setPlayMode(PM_REPEAT_ONE);
      break;
    }

  if (Serial.available()) {
    MPCommand cmd = (MPCommand)Serial.read();
    switch (cmd) {
    case MP_PAUSE:
      Serial.write("[Pause]\r\n");
      player.opPause();
      break;
    case MP_RESUME:
      Serial.write("[Resume]\r\n");
      player.opResume();
      break;
    case MP_BACKWARD:
      player.opFastRewind();
