The order of events in your project is not right..
Here is how I usually do this:
In the loader layout (Titles) you need to wait for "Loader layout complete" event before doing anything else.
When this event is triggered, I read all game settings from Local Storage. Instead of storing each value separately, I put them all in a dictionary, see this simple demo. After loading the dictionary, you can extract values to variables, if you want, see this screenshot.
When settings are loaded (or not exist and default settings are used), only then I set audio volumes and start playing music.
You don't need to load settings again, so don't do this on start of every layout.