Asking one question for supporting playlist for DRM content

## Description
Hi Support,
I have some questions related to videojs-playlist-ui.

- Is it possible to add multiple DRM contents?
- There may be a chance of expiring the license token. Can we dynamically generate the license token and add to the particular playlist while playing the content from the playlist?

I am going to implement Audio DRM using the videojs-playlist-ui? 
