When trying to play a sound file contained in a folder located on the server, the sound plays, but it also opens an extra browser window in front of the FM content. My script currently has a Go to Field step, Set Field step with the IP address where the sound file is located, then the Open URL step, and finally a Close Window step. When I use the script locally, it works and the extra browser window goes away; but when I test it live over the network using IWP the extra window remains open. I either could use a script step to make this extra window go away automatically, or a different way to link my sound. Thanks.

I'm afraid, but that's IWP and its limitations.

Of course you can control your windows on your own computer.

But on another computer you can not control a user's browser window out from your local FM8 (because there is no protocol for that, and the remote computer access restrictions would not allow to do that).

The only way one can do that is to send some JavaScript with a window.close() command within the HTML code that is sent to the browser. But then you have to use CWP.