hvedekim,
Though I don't have a triton yet, I wanted to try to guess what you can do. I am thinking that you could have a cymbal sound as your click and route it to one of the individual outputs, which should go to your drummer. If this will work, then the cymbal (or whatever sound you wanted) wouldn't be audible in the main system, but be routed to the drummer. This is just a guess, but something I would try if I were in your shoes. Let me know if it works.
DanO