Drag and drop to start

Here's the situation: you have a video or audio file you want to play. If you double click on it, it will launch the default programme set for that file, but you want to use another player (I have four I commonly use). Here's the simple answer: drag the icon of the video or audio file onto the icon of the player you want to use, and it will start in that player.
You can easily set up shortcuts on your desktop of your favourite programs, and dragging an icon onto the shortcut works just the same as if it were onto the actual program. (To make a shortcut, click on the program icon with the right mouse button, and drag to where you want to put it. In fact, you can create shortcuts of absolutely anything using this technique. And you can make as many shortcuts as you want of any file.)