Preamp w/ Single Line Input. But I have DAC and CDP

My preamp is a vintage MFA LUMI preamp which has a single line input. I've been using that connection for my CDP. However, I just got a Cambridge Audio DAC and it works great using the preamp line stage but I first have to remove the CDP interconnect cables.

What is the most elegant (simple) way for me to have two line inputs so I don't have to keep unplugging IC's?

If it's not apparent by the nature of my question, I am a complete newbie to digital audio.

Thanks in advance.

Paul