/* try to play something, if playing is enabled and nothing is playing
* already */
+/** @brief Return true if @p represents a true flag */
+int flag_enabled(const char *s);
+
int playing_is_enabled(void);
/* return true iff playing is enabled */
void enable_playing(const char *who, ev_source *ev);
/* enable playing */
-void disable_playing(const char *who);
+void disable_playing(const char *who, ev_source *ev);
/* disable playing. */
int random_is_enabled(void);
void enable_random(const char *who, ev_source *ev);
/* enable random play */
-void disable_random(const char *who);
+void disable_random(const char *who, ev_source *ev);
/* disable random play */
void scratch(const char *who, const char *id);