First, make sure you have the latest ARIA Player update.
If you are still unable to change settings in the Ambience effects, there may be a permissions issue with the ARIA Plugins folder. To correct this, follow these steps:
- In Finder, navigate to Go menu > Go to Folder.
- Type or copy & paste the following location:
- Right click on the Plugins folder and choose Get Info.
- At the bottom under Sharing & Permissions, set both admin and system to Read & Write.