You're not forced to mute your speakers at all. You can just put up with the roar, it's really not that bad. But if you're going to bitch about it every time you hear it, you might as well just mute them.
I doubt anyone truly likes the roar, it's just some people (like myself) can live with it, or choose one of those "fixes" for it ("Rush" login, mute speakers, whatever), because it's not really that big of a deal.
I'm not arguing against removing it, I'm fine if they do, I'm just saying, everyone who continues to QQ about it is QQing for a dumb reason IMO.
I was trying to help, by giving suggestions and just flat out stating that it's not such a big problem, but clearly I was wrong and this little sound you hear every once in a while that isn't that hard to get rid of is a serious world crisis and we have to stop it A.S.A.P.