added the readme

Sound.h

@@ -0,0 +1,42 @@
+#ifndef SOUND_CLASS
+#define SOUND_CLASS
+
+#include <fmod.hpp>
+#include <glm/glm.hpp>
+#include "Object.h"
+#include "SoundSystem.h"
+
+class Sound : public Object {
+public:
+    Sound();
+    ~Sound();
+
+    // Load a sound file through the system cache.
+    // is3D=false for music/UI that doesn't need spatialization.
+    void LoadSound(const std::string& filename, bool is3D = true);
+
+    bool PlayTrack(bool loop = false);
+    bool StopTrack();
+
+    // Call every frame if the sound is moving.
+    void Update3DPosition(float x, float y, float z);
+    void Update3DPosition(const glm::vec3& p) { Update3DPosition(p.x, p.y, p.z); }
+
+    FMOD::Channel* GetChannel() const { return m_channel; }
+
+public:
+    glm::vec3 pos = { 0.0f, 0.0f, 0.0f };
+
+    // Attenuation distances — set before PlayTrack if you want non-defaults.
+    float minDistance = 1.0f;
+    float maxDistance = 100.0f;
+
+    // Doppler scale for this emitter (1.0 = normal).
+    float dopplerScale = 1.0f;
+
+private:
+    SoundData* m_soundData = nullptr;
+    FMOD::Channel* m_channel = nullptr;
+};
+
+#endif