You're missing the point spectacularly.

1) Was that person attempting to annoy people?
2) Was he asked to stop?
3) Is muting microphone output as significant as muting all sound effects?

By the way, do you still use the demon-heart backstory? (Or was that one of the other Raziels?)

As pointed out, if an admin tells you to stop it - you do it or face the consequences.

Perhaps he's roleplaying the village idiot.

But seriously, if you do something constantly with the sole intent of irritating people, and then continue to do it even after being asked to stop by players and administration alike, don't be surprised when suddenly you're faced with consequences.

Also, if someone is singing you can "mute" them individually, but if someone is playing a horn you have to turn the channel off all together, and there are many other sounds played on the same channel...

What? There are people who actually have voice turned on?

Yea, I usually do.

Awhile ago people like me used to do "JukeBox" type things with Microphones - so yeah, quite afew do.