Sorting documents in a Commons Group

Hello

I would like documents created within a group to be sorted alphabetically by title name. At the moment they seem to be sorted according to creation date. Is there some simple way to change the sorting of these documents or, if not, which file do I have to hack to ensure that sorting occurs in this way (and how)? The reason I need this is that I am running an academic website and would like documents sorted according to the author name as it appears in the title box.

I am still somewhat puzzled by drupal. I hope that this qiestion is not too silly.

Thanks in advance

Andrew