IRRemote library conflicts with tone() function

Using Arduino Programming Questions
9

Hi,

I'm quite new to Arduino things and tinker occasionally when I have time. Recently I followed a tutorial on using old TV remotes. http://goo.gl/62c1d8 and got as far as getting an LED to dim with the remote.

I thought I would then modify the sketch to include a bleep (using a piezo speaker) each time a button on the remote was pushed using tone(). No luck, got a compiler upload error, found this thread and did the mod to the IRremoteInt.h detailed above by nunesdi01. Uploaded to my Uno OK but then nothing worked including the dimming led.

LED dimming sketch:

#include <IRremote.h>
#define irPin 11
IRrecv irrecv(irPin);
decode_results results;

int ledPin = 9;
int brightness = 10;

void setup() {
   Serial.begin(9600);
   irrecv.enableIRIn();

   pinMode(ledPin, OUTPUT);
}

void loop() {
   if (irrecv.decode(&results)) {

       switch (results.value) {
         case 0x1000405:
            if(brightness < 255) {brightness = brightness+5;}
            analogWrite(ledPin, brightness);
            Serial.println(brightness);
            
            break;

         case 0x1008485:
            if(brightness > 0) {brightness = brightness-5;}
            analogWrite(ledPin, brightness);
            Serial.println(brightness);
            
            break;

         case 0x100BCBD:
            Serial.println("OFF");
            analogWrite(ledPin, 0);
            brightness = 20;
            
            break;
         }
   irrecv.resume();
   }
}

LED dimming sketch with tone() added to one button

#include <IRremote.h>
#define irPin 11
IRrecv irrecv(irPin);
decode_results results;

int ledPin = 9;
int brightness = 10;
int buzzer = 8;



void setup() {
   Serial.begin(9600);
   irrecv.enableIRIn();

   pinMode(ledPin, OUTPUT);
   pinMode(buzzer, OUTPUT);
   
}

void loop() {
   if (irrecv.decode(&results)) {

       switch (results.value) {
         case 0x1000405:
            if(brightness < 255) {brightness = brightness+5;}
            analogWrite(ledPin, brightness);
            Serial.println(brightness);
            tone(buzzer, 1000); // Send 1KHz sound signal...
            delay(1000);        // ...for 1 sec
            noTone(buzzer);  
                    
            break;

         case 0x1008485:
            if(brightness > 0) {brightness = brightness-5;}
            analogWrite(ledPin, brightness);
            Serial.println(brightness);
            
            break;

         case 0x100BCBD:
            Serial.println("OFF");
            analogWrite(ledPin, 0);
            brightness = 20;
            
            break;
         }
   irrecv.resume();
   }
}

I know I've done something wrong...can someone help me please?

Thanks