The question you are asking is how to program the patch matrix in your X32 to send audio from the Aux 5/6 input to be heard on one of the 32 Audio Inputs in Studio One 3. That is not a question we can answer. You'll need to refer to your mixer product manual and look up how patching channels works. You'll need to decided which of the 32 channels, your Aux 5/6 will map to. Then it's just a matter of record enabling the inputs that you're sending 5/6 to to record your CD Player input.