Play sound file(loop) when in layout.

[hartmut]

Hello

I am stuck here. I would like to play a music mp3 file while my user is in a certain layout. When they change to another layout I would like a different file to play.  I would like it to loop and play as long as the user is in a layout. Ideally if it is somehow possible I would like it to fade in when it plays the  first time. But loop if the user remains there. I am assuming it could happen in the background by a script trigger. Could I ask for you help here please?

Thanks