Looking for a good tutorial for adding audio to WAN 2.2 videos

I'm finally at the point to where I feel comfortable that I can generate a decent quality WAN 2.2 video with relative consistence. Now, I'd like to move on to adding audio. Unfortunately, I have yet to be able to figure out how to a) set up ComfyUI for it, and b) to really use it once it's set up. Is there a straight-forward, "start explaining it to me as if I were a 5-year-old" tutorial that covers the setup, then use, of ComfyUI for this? In case it makes a difference, I typically use Vast. AI for this, but also have a Runpod account if that's easier to work with.