Added music and perfom bug fixes

src/AudioPlayerAsync.h

@@ -1,13 +1,16 @@
 #pragma once
-
-#if 0
+#ifdef __ANDROID__
+#include <SDL_mixer.h>
+#include <SDL.h>
+#else
 #include <SDL2/SDL_mixer.h>
+#include <SDL2/SDL.h>
 #endif
 #include <string>
 #include <unordered_map>
 #include <memory>
 #include <mutex>
-#include <SDL2/SDL.h>
+#include <vector>
 
 #ifndef __EMSCRIPTEN__
 #include <queue>
@@ -53,14 +56,15 @@ private:
     std::queue<std::function<void()>> taskQueue;
 #endif
     bool stop = false;
-#if 0
+
     std::unordered_map<std::string, Mix_Chunk*> soundCache;
     std::mutex soundCacheMutex;
 
     std::string currentTrack;
 
     Mix_Music* currentMusic_ = nullptr;
-#endif
+    std::vector<char> currentMusicData_;
+
     int  musicVolume_ = 128;
     int  soundVolume_ = 128;
     bool musicEnabled_ = true;