How to make DTA Default?

How do i make Down them All ( Firefox Plugin for download management ) to be used as the default download manager, so that when i download a file it directly uses Down them All without asking if i want to save file or use another manager.
Is that Possible?

Thanks,
Alex.

when u click on a link to download just choose

I know all this, but i want it to be automatic.
No choosing needed, and the checkmark in firefox to "Automatically do this from now on" doesn't work. I want it, to be like i click the link and there you go, DTA.

Edit: I'm using the newest version ( Beta ) Already.