add music on each moves lighbulb / mark and when an error occurs

main.c

@@ -2,7 +2,8 @@
 
 #include <SDL.h>
 #include <SDL_image.h>  // required to load transparent texture from PNG
-#include <SDL_ttf.h>    // required to use TTF fonts
+#include <SDL_mixer.h>
+#include <SDL_ttf.h>  // required to use TTF fonts
 #include <stdbool.h>
 #include <stdio.h>
 #include "model.h"
@@ -11,12 +12,14 @@
 
 int main(int argc, char* argv[]) {
 	/* initialize SDL2 and some extensions */
-	if (SDL_Init(SDL_INIT_VIDEO) != 0)
+	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) != 0)
 		ERROR("Error: SDL_Init VIDEO (%s)", SDL_GetError());
 	if (IMG_Init(IMG_INIT_PNG & IMG_INIT_PNG) != IMG_INIT_PNG)
 		ERROR("Error: IMG_Init PNG (%s)", SDL_GetError());
 	if (TTF_Init() != 0)
 		ERROR("Error: TTF_Init (%s)", SDL_GetError());
+	if (Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, MIX_DEFAULT_CHANNELS, 2048) < 0)
+		ERROR("SDL_mixer could not initialize! SDL_mixer Error: %s\n", Mix_GetError());
 
 	/* create window and renderer */
 	SDL_Window* win =