Placing audio sources in the world

I'm not sure why you would be "moving" the Audio Source, creating the empty game object or any of that...you could just be calling a method like MasterAudio.PlaySound3DFollowTransform. Why would there ever not be a game object at the location you want to make the sound? I'm not familiar with a scenario like that.

As far as tweaking the min/max distance of the sound, do you know what you want those to be up front? Because we added AudioSourceTemplates in the last version so you can easily change those in the Variations in bulk.

The transition to snapshot is a Unity API call. Is there another method for crossfade type? If not, we can't do it.

Ok, then that is one fine way to do it (with EventSounds script start event).

Note that if your Game Object "making" the sound isn't ever going to move, you don't need to use "Attach to Caller". You can use "Caller Location" instead, which doesn't ever check for position update so it's better performance when you have a lot of them going on.

The picture you showed for transition types is interesting. I don't believe that there is a Unity API method that allows us to specify the transition type for that. Take a look yourself here: docs.unity3d.com/500/Documentation/ScriptReference/Audio.AudioMixer.TransitionToSnapshots.html

If you find something that lets us do it, let me know. It might be "UI only".

As far as your original question: "It's very cumbersome and I need to move the sound source from the audio group to the same position as the new game object I created to tweak the min/max distance of the sound. Is there perhaps an easier and faster way to do this?"

I think this would be faster:
1) Just create an Audio Source on the Empty Game Object, tweaking it there.
2) Copy the Audio Source component from there over top of the Audio Source in the Sound Group Variation(s) you want to play (and then delete the Audio Source on the empty game object).

That's probably a little faster since you don't have to move things around twice.