Create audio item from uploaded video item?

Working on a project using the Drupal Module (Drupal 7) and Kaltura hosted services.

Assigning two Kaltura Media fields to a Drupal content type, one for video and one for audio.

Goal behavior is that when a video is uploaded, in addition to creating the necessary flavors of the video item, to also have an audio-only item created, so that users can download the video or only the audio.

We'd then also be able to create RSS feeds with enclosures - one for the videos published and another for the audio.

Is this possible? Any guidance on how to best accomplish this?

We could have users create their own audio-only version of the video and add an audio item after adding the video item, but it seems like an unnecessary step when the audio could be pulled from the video item.