I appreciate the alternative approach, as that is what I was trying to do originally. The difference here is that you use a counter that has no dependency on the wav running to completion. I was resetting my measure/beat count based on a trigger coming from OnFinished. and that creates a dependency that doesn’t allow any hookup to the start or stop of the wave player (creates a loop).
The question is actually about whether a metasound can be controlled by an external BP using quartz without introducing the gain anomaly I came up with. But your answer speaks to what I was trying to do initially which logically seemed like the more correct approach (and should be possible). I will rethink that again from a standpoint of keeping a measure count completely isolated from the normal termination of the wave so a trigger delay can connect to the various starts and stops of the wave players. This would allow early termination of a cut without randomly starting the next on the wrong beat (or worse). That might be a way to do a metasound only solution.
Thanks