This has been said 1 year ago and it just died but we need a volume meter for music to stop the 'Too Loud' message from appeaing, the volume meter could also decrease/Increase the volume radius on which to stop music from overlapping.
The volume meter could be used just like the Players Scale meter in the events.. but on a click of a brick it will make the music go to that volume from the volume meter that has been selected on eventing.
I added an image to show you an example.

Cheers, Matt