Add media from gallery "actions" box when inserting audio into page

Hi!

I am trying to add multilple audio files that I have already added to my gallery all at ONE time, rather than adding each file individually.

What is the “actions” box next to the “show” link that you see when inserting audio into page through the gallery?

How do I add multiple files at one time without having to show and edit each file?

Thank you!
Sheen