To be a disciplined gambler you should have a matured mind, see those sounds are things that makes the game fun, if possible get an ear plugs to block it out if you can't handle it, don't underestimate the power of sounds on your psychology.
You mean not to hear the sound of the slit matching or the casino games? I enjoy gambling with the sounds. Even if my device is having low volume, I slightly increase the volume so that I can hear the sound of the games. That does not make me an addict or undisciplined but it is what I love. I can not be playing the games without the sound, I will not enjoy it. This is not about mean been kiddy or not. It is not about id.
Great for you, but from what you tagged I wrote that you need to be a disciplined gambler and see those sounds as things that makes the game fun and that is what you are doing. But for those that are getting addicted to the sound and gambling irresponsible they can try blocking out the sound.