Sound Loop?

How can i make a sound loop every 0.5 seconds?

You can either tick the ‘looping’ checkbox in the sound details ( double click the wave in the content browser ).

Or you can do this:

But is it possible to only do this when i go to another camera. What i mean is that in my level after 6 minutes the viewport camera changes is it possible to play those nodes only after i have changed camera?

Yes, instead of beginplay, you just connect it after the stuff that changes camera.