You can completely turn off the front display using the dim key. The three modes are normal, dimmed, and off. Also, I think you might want to use the Page Up/Down button on the remote when browsing files. That skips to the next screen (about 10 files if memory serves) and you can then use the arrows to browse file-by-file.
As I stated, 'Off' does not turn it completely off. Even when it is set to off, it still comes back on for a short time every single time you press a button on the remote. I may just put some electrical tape over the display so I never see it.
I did not see the page keys, so that is helpful. Thanks!