Ok, I've got an animation here that uses the Speaker objects to play sound. These speakers move with certain objects. In the NLA Editor I set when the speakers are to play certain sounds. Also in this animation, I have several cameras that I jump between. The VSE Editor is empty.
Now, in the Render panel, I click the Audio button to render the audio on its own, but when I listen to the result it seems as though it only picks up sound from the first/current camera. Why is this? First time I clicked that button, it all seemed just fine. All other times with a few tweaks it doesn't work.