func (s *Shout) UpdateMetadata(mname string, mvalue string) {
md := C.shout_metadata_new()
ptr1 := C.CString(mname)
ptr2 := C.CString(mvalue)
C.shout_metadata_add(md, ptr1, ptr2)
C.free(unsafe.Pointer(ptr1))
C.free(unsafe.Pointer(ptr2))
C.shout_set_metadata(s.struc, md)
C.shout_metadata_free(md)
}
func DestroyShout(shout Shout) {
/* Destroys the Shout instance. The instance can't be used
without undefined behaviour after calling this function */
C.shout_free(shout.shout)
C.shout_metadata_free(shout.shout_metadata)
}