Is there a way is Modular messaging to create a mailbox that is for MOH only?

I could create a informational mailbox, but then how would I make it loop. I also would like to be able to barge in.

We are currently using the VAL boards for specific MOH for a VDN. It is time consuming to split up a message so the caller does not have to hear the entire 10 minute loop. We would also like to bring our time to answer down by being able to barge in.

The only other thing I can think of is to add multiple external music sources. The client does not want to do this becuase of cost issues.