Thank you; I was unable to get on earlier. Now, the macro library says timed functions are canceled when you go to another passage, so it would be a gamble whether it would work or not.
The main reason I wanted this at the moment was so that an audio track could be started at full volume, whereas if you had gone through a passage which had it fade out, it only continues to play silently. I wanted to combine either stop with fade out, or combine fade in with loop play. I found that I can actually do the latter, so I am good for now, but still would like to know the former for knowledge's sake.