JWplayer 4.5 flashvars abouttext and aboutlink

I would like to remove the link back to longtailvideo that shows up on right-click in the player. In Drupal 6, FCKeditor I access the player with the following code:

[swf file="http://www.aeksh-media.de/data/aerztetag2011-sh.flv" flashvars="image=http://www.aeksh-media.de/data/aerztetag2011-sh-startbild.jpg" params="width=460&&height=270&&allowfullscreen=false&&abouttext=Aerztekammer Schleswig-Holstein&&aboutlink=http://www.aeksh.de"]

The link back isn't changed. If I move the about* vars to the flashvars behind the startbild.jpg, then no player shows. How can I change the link back in my licensed version?

Frank