func (l *soundListener) SetVelocity(x, y, z float64) {
al.Listener3f(al.VELOCITY, float32(x), float32(y), float32(z))
}
func (l *soundListener) SetLocation(x, y, z float64) {
al.Listener3f(al.POSITION, float32(x), float32(y), float32(z))
}