+typedef struct SampleInfo SoundInfo;
+typedef struct SampleInfo MusicInfo;
+
+#define SND_CTRL_NONE (0)
+#define SND_CTRL_MUSIC (1 << 0)
+#define SND_CTRL_LOOP (1 << 1)
+#define SND_CTRL_FADE (1 << 2)
+#define SND_CTRL_STOP (1 << 3)
+#define SND_CTRL_ALL_SOUNDS (1 << 4)
+#define SND_CTRL_RELOAD_SOUNDS (1 << 5)
+#define SND_CTRL_RELOAD_MUSIC (1 << 6)
+
+#define SND_CTRL_PLAY_SOUND (SND_CTRL_NONE)
+#define SND_CTRL_PLAY_LOOP (SND_CTRL_LOOP)
+#define SND_CTRL_PLAY_MUSIC (SND_CTRL_LOOP | SND_CTRL_MUSIC)
+
+#define SND_CTRL_FADE_SOUND (SND_CTRL_FADE)
+#define SND_CTRL_FADE_MUSIC (SND_CTRL_FADE | SND_CTRL_MUSIC)
+#define SND_CTRL_FADE_ALL (SND_CTRL_FADE | SND_CTRL_ALL_SOUNDS)
+
+#define SND_CTRL_STOP_SOUND (SND_CTRL_STOP)
+#define SND_CTRL_STOP_MUSIC (SND_CTRL_STOP | SND_CTRL_MUSIC)
+#define SND_CTRL_STOP_ALL (SND_CTRL_STOP | SND_CTRL_ALL_SOUNDS)
+
+#define IS_MUSIC(x) ((x).state & SND_CTRL_MUSIC)
+#define IS_LOOP(x) ((x).state & SND_CTRL_LOOP)
+#define IS_FADING(x) ((x).state & SND_CTRL_FADE)
+#define IS_STOPPING(x) ((x).state & SND_CTRL_STOP)
+#define IS_RELOADING(x) ((x).state & (SND_CTRL_RELOAD_SOUNDS | \
+ SND_CTRL_RELOAD_MUSIC))
+#define ALL_SOUNDS(x) ((x).state & SND_CTRL_ALL_SOUNDS)
+