I have managed to add some option fields to the download manager.
This to achieve the feature to set some varables wich can be translated in the
language file.

Chech this site (site is in Dutch).

http://www.jufanne.nl/download/detail/muziek-uit-oude-rommel/76/ 

The "Voorbereiding" is $option1 (here with value = "3")
The "Niveau" is $option2 (here the value = "3")
The "Duur" is $option3 (her the value = "30")

Where you can see the stars there are some parameters set.

I would like to update the download manager when needed, but i always have to
manualy make these changes after an update.

The files i have changed are:

action.editfile.php 
editfile.tpl
nl_NL.php 

I just added 3 option fields. Everyone can name them thereselves in the
template.
And it can be used for many things.

Can you add this to the next release?