Rise narration in XLF?

Hi folks,

I'm looking for a simple way of sending both on-screen text and recorded audio (narration) to my translators in the Rise 360 XLF. 

For example, if I've added a narrated audio clip or video with a Multimedia block, I'd like to incorporate the narrated audio.

Right now, I send them:

• XLF that captures the on-screen text
• Separate file (Word or PPT) with the narration script. 

Is there way to incorporate the narration script into the Rise course that doesn't appear on-screen and messes up my layout?

Does the CC export with the XLF? I tried to read the XLF but can't make enough sense of it.