Packing assets (music) for marketplace - How?

I’ve been on the hunt trying to figure out how to package some of my music libraries for the UDK marketplace with no luck. I’m really just looking for a step-by-step guide on how to do this. At one point a few years ago I had a pdf (from UDK) that broke it down for me but can no longer locate the instructions. Does anyone have a **link or pdf **on how to pack up music cues properly so I can upload them to the marketplace? I’m getting odd errors and/or cannot import whatever I export. Thank you!!!