Use special program at double clicks... except

I propose one small change

In Tools > Options > Tools there is this "Default tool" option that can be enabled

What it changes the behavior of a double click: instead of playing the file, it executes one of the predefined tools

The proposed change would be to ignore that new double click behavior in the very first column, where the icon of a file is displayed. That way I could have my new double click option active and retain the default one [sending the file to a player]

[And yes, I am aware of existence of the Play button available in the right click menu]

A further going change would allow to define "default tool" for every separate column