That seems like an overzealous workaround, with all it's own problems, like switching forth and back.
I disabled the beep a few days ago while RPing, but already found three instances where I miss the sound (mIRC's own script editor being one, where I rely on the beep to be notified that mIRC completed a search without finding additional results, something quite useful if you have a client with so many code that it takes a couple of seconds), so I had to put it back on.
I would prefer it if I wasn't forced to return to 6.35 just because 7.x turns typing long messages into such a hell to your ears.
