To get is to work first download Jack .exe for at
http://jackaudio.org/download
After download is complete open crossover then go to run command
Find the .exe file that you downloaded
MAKE SURE TO USE THE FL STUDIO BOTTLE!!!
After completing the steps above run the command.
It will install it and it will say launch it after install choose yes (but you dont have to)
After the install is complete jack will open up.
Then after that open up Fl studio and go to Option->Audio Settings.
The change your input/output to JackRouter (Make sure the sample rate is 44100!)
Then you can close the window.
CONGRATULATIONS!!!
You know have a fully working FL STUDIO on Crossover!
If you have any problems please post here!