Just so I don't lose current progress on 2.0...

src/resource/audio.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <SDL3_mixer/SDL_mixer.h>
+#include <filesystem>
+
+namespace game::resource
+{
+  class Audio
+  {
+    MIX_Audio* internal{nullptr};
+    MIX_Track* track{nullptr};
+    int* refCount{nullptr};
+    static MIX_Mixer* mixer_get();
+    void unload();
+    void retain();
+    void release();
+
+  public:
+    Audio() = default;
+    Audio(const std::filesystem::path&);
+    Audio(const Audio&);
+    Audio(Audio&&) noexcept;
+    Audio& operator=(const Audio&);
+    Audio& operator=(Audio&&) noexcept;
+    ~Audio();
+    bool is_valid() const;
+    void play(bool isLoop = false);
+    void stop();
+    bool is_playing() const;
+    static void set_gain(float vol);
+  };
+}