               //Mute function
               case 0: {
                 applicationState = 0;
-                if (!mute) {
-                  mute = true;
+                if (!radio.isMuted()) {
                   radio.mute();
                 } else {
-                  mute = false;
                   radio.turnTheSoundBackOn();
                 }
                 

float selectedStation;
boolean isStandByOn = false;
boolean wasReleased = true;
boolean mute = false;

char menu[MENU_DEPTH][MENU_LINES][MENU_TEXT] = {
                       {{" Mute"}, {" Search"}, {" Fine search"}, {" Register statn"}, {" Configuration"}, {" Stand by"}, {" Load deflt stn"}, {" Exit"}},


void printMuteStatus() {
  lcd.setCursor(12, 0);
  if (radio.isMuted()) {
    lcd.print("M");
  } else {
    lcd.print(" ");
