I have heard they look the same, but I am not familiar with the Castle software. If it has different features on it from the Xcelorin software I would so no you can't interchange. If they are the same then it is probably no big deal. I would just stick with the Xcelorin program for the Losi and Castle stuff for the Mamba.
JRXS Type R, I have four of them!! ;) ( Yes, I still have them!!)