>>I guess it means that whatever application is assoiciated with .wav files is going to run in this case.
>
>Something like that I would say. This should be default and activated on the PC. That's probably what is related to that at this point.

I'm wondering if this is possible from the WEB application to detect if there is an association for WAV file on a client computer.

I needed something similar for our WEB application, but I'm guessing it's either too hard or impossible to detect.