There are certainly various workarounds and they all come with limitations.As I was working through some of those workarounds, I came across the metronome in AUM. I was surprised at the level of configuration and routing options for it. I immediately thought, "I bet it wouldn't take much effort to make this sync compatible". Says the guy that doesn't have to do the coding...lol. In my head this is just switching out the sample/sound used by the metronome and probably fixing the level. With that being said, I'm sure there's more to it than that.