If it's going to get done in the Wendy filters, then it's something that only the Empeg guys could implement. It's in the player software. I don't think Hijack can control things like Wendy filters.

Hijack might be able to do "tricks" like force a certain tune to play at a certain time, but this would not be controlling a Wendy filter, it would be sending a "insert specific FID" command to the player from the outside.