[TYPO3-dam] Sorting - I still don't get it

[Guido tum Suden]

Hi,

I updates to DAM 1.1b5 because I read something about sorting possibilities.
Now, I found, that I can sort the list. E.g. I made the field filename 
show up, and then sort the list by that name.
But the files aren't truly sorted, just the display is.
So I still have the problem, that all the pictures in a gallery are 
disordered because the sequence of indexing seems not to be done by 
filename.

How can I solve that problem?

Guido tum Suden