I don't believe this is (directly) from the Society. They look like instructions a particular congregation is using.
The muting 10 minutes before the meeting to listen to prerecorded music seems to be taken from how they do at conventions and assemblies. IMO, applying this to a local meeting where the local friends are looking forward to chewing the fat before the meeting, this seems a bit heavy handed.
At the local meetings where I am at the chairman will make an announcement that the meeting is going to start in a few moments (maybe a minute or less before meeting time) and he will then mute everyone.
If the Society were to go with this 10 minutes of enforced silence before local meetings I don't think it would be well received. I could see many using the 10 minutes of silence to do other things (dishes, start laundry, etc). Having a 10 minute music period may work when you are out of town for a whole day convention. But doing that for a 1:45 length local meeting (where you are sitting at home) doesn't seem like it would work very well.