fix: add song and change to ATOM

FW/m5stack_audio/src/main.cpp

@@ -20,7 +20,7 @@ AudioFileSourceLittleFS *file;
 
 AudioOutputI2S *out;
 
-const char *waveFile = "/003_short.mp3";
+const char *waveFile = "/Let_it_be.mp3";
 
 // Called when a metadata event occurs (i.e. an ID3 tag, an ICY block, etc.
 void MDCallback(void *cbData, const char *type, bool isUnicode, const char *string)
@@ -74,7 +74,7 @@ void setup()
   mp3->RegisterStatusCB(StatusCallback, (void*)"mp3");
 
   out = new AudioOutputI2S();
-  out->SetPinout(21, 13, 14); //bclk, wclk, data
+  out->SetPinout(19, 33, 22); //bclk, wclk, data
   mp3->begin(id3, out);
   out->SetGain(0.25);
 }