Hi Djreign,
Thank you for using our instruments,
I believe you should be able to integrate the Keylab inside Samplitude Pro x as it supports HUI and MCU protocoles,
You should go to your control surface window and route the keylab's DAW or MIDIIN2 (if you are on windows) and out using one of the two protocol (which you can select through the midi control center)
You should then be able to use transports, and have volume for each track assigned to your faders.