Hey guys I was wondering how I could link multiple controllers into FL Studio, I have an M-Audio Trigger Finger and a casio midi keyboard and I was wondering is it possible to run them both at the same time, and for example I would have my casio set on a synth and my m-audio on a clap? thanks

Are they both USB enabled? If so, you can set them to separate midi channels and control what ever FL Studio channel by matching the midi channels.
If you want to have one controller be the master of the other, you may need a midi cable and go out to the in of the slave device and finally into the USB of your computer.

I hope this helps