I've been searching and reading for a few days but could not find a solution for the problem. We are using a new installed Moodle 2.0 and want to re-use files across several courses. But as these files will be updated regularly, we don't want to update each and every instance of these files manually. After reading all the posts to this quite common problem, I came to the conclusion to use the "Legacy course file" repository and enabled it within the site administration. But...there is no legacy option available within the courses!
I suppose this is because the legacy option is only available after updating from Moodle 1.9 or below? Or do I have to change any settings somewhere else?