Couldn’t dig up the specific BP, so this is a mock-up. Would be easier to change the volume on a sound class, submix, or other groupings of audio, but here it’s just gathering all ambient sounds and looping through them and changing each their volumes specifically. The envelope output from a sound won’t automagically be in the 0-1 range, but we can use math and BPs to force that. Check out ArthursAudioBPs for examples of that!