int playlist_open(char *name);
void playlist_close(void);
int playlist_update_audio_file(struct osl_row *aft_row);
+int playlist_check_callback(__a_unused const struct osl_object *query,
+ struct osl_object *result);
/** evaluates to 1 if x < y, to -1 if x > y and to 0 if x == y */
#define NUM_COMPARE(x, y) ((int)((x) < (y)) - (int)((x) > (y)))