public void ChangeVolume(Sound sound, float value)
 {
     Al.alSourcef(sound.Channel, Al.AL_GAIN, _masterVolume * value);
 }
 public bool IsSoundPlaying(Sound sound)
 {
     return IsChannelPlaying(sound.Channel);
 }
 public void StopSound(Sound sound)
 {
     if (sound.Channel == -1)
     {
         return;
     }
     Al.alSourceStop(sound.Channel);
 }