[TYPO3-dam] using folder structure not possible anymore?

[Andreas Balzer]

Hi!
I just installed the latest beta and wonder why the element browser 
doesn't show the file system anylonger? I only see the categories and 
some index things like when the file was indexed, which file it is, ...
But there is no option to click through the file system paths to select 
a file (e.g. an image)

What do I have to configure?

Greetings
Andreas