unity3 b4, ignoreListenerVolume question

i’m getting this warning when using ignoreListenerVolume:

WARNING: 'UnityEngine.AudioSource.ignoreListenerVolume' is obsolete. This will be replaced by source groups

It’s working and all, but i would love to know what source groups are. i searched the documentation for it and also the forum here, but found nothing. can anyone point me into the right direction?

I’m getting this warning too. Seems like it’s just being deprecated for a future group, maybe in favor of grouping together AudioSources. Maybe they’re just not ready to talk about it yet.