Add an option to play sound effect only when changing state

[Yanis002]

Makes this component less annoying. Thanks to @Exter-N for helping me on this.

[Yanis002]

If enabled:

• ahead & gaining time = sound played
• the same thing = no sound played
• changing from that to behind and losing time = sound played
• etc..

You can choose if you want the old way or this way, it supports split undo