[Kingsley Hoare]

Hi. I know this is long out-of-date however I am using CS6 and still have this ( I don’t know if this has been resolved with later versions of after effects but thought I’d share my solution anyways)
By the way, what you said above is correct… when you change the volume of a 44.100 wav file, the sound only plays on one side (left side for me)

Right click on the video/sound track you want to change the volume for, click Pre-compose, rename the new comp, click ok and go to the comp. Make sure the volume in the new comp you just made is at 0db. Go back to your main comp and adjust the volume there.

I understand that this isn’t ideal for keyframing video sound but can still work.

Thanks
Kingsley