[Plugin] Master Volume [MZ]

This plugin offers you the following:

 - Adds the option for "Master" above the "normal" audio settings.
 - Lets you set the "Start Volume" for all audio sources.
 - Lets you set the "steps" (Offset) that are made when changing sounds.

 Terms of use:
 - This plugin can be used in both commercial and non-commercial projects.
 - Please add "MrSerji" to the credits if you use it.
 - Distribute this plugin only through the link to this page
 - The code may be modified