Cannot disable beep sound with newer firmwares (>=1.44)

[thibaulf]

The feature was added in #136 , but this doesn’t work with firmware 1.44.

Newer firmware are using "BuzzerCtrl" to control the buzzer.
A new property is used for this:

Buzzer active ==> BuzzerCtrl =1
Buzzer inactive ==> BuzzerCtrl =0

Here is a fix for this #162