3d Sound Repetition help

[Psilocybe 3]

I am using

to get units on the battlefield to project sound(allahu ackbar specifically) for a little single player mission against IS I am making.

I have about 10 different .ogg files and I want the units to use and repeat them periodically and if possible, after any casualties, either inflicted or received.

All i know how to do is:

this say3D "sound1";

Hopefully you can help me out with my request.

Thanks.