Do a searh (at the top of the page) for ";Going beyond 8 voices";. This topic has been talked about before.
Dude, I hardly have to start threads anymore because almost every topic I need help on has already been discussed in a previous thread. The Search tool is a great help once you figure out how to really use it!
Legacy Forum Post
Is it possible to load more than 8 instruments to use in Finale? If so, how?