How to deactivate the Symbol on the right top?

#1
Hello,
since I've installed the newest version of ProgDVB I've got a symbol on the right top of each video-playback. In ProgDVB itself and also in Winamp, VLC, and all the other programs. It looks like a small cube consisting of nine even smaller cubes, while the one on the right top is hollow. (I hope you know what I mean...)
So, how can I deactivate it without deinstalling ProgDVB? ^^

#5
hm, ok...
I've got Cyberlink PowerDVD 5 installed on my computer. But when I choose "Cyberlink" as Codec, I get the error message 'Filter not founded'...
How can I use the Codec?