Jonno, I added the MGM logo as I didn't want to touch the english soundtrack from BD and german soundtrack from LD; also, if someone with other BD soundtracks that would like to put them in sync, will have no problems.
I thought to add black frames to put HDTV in sync with BD, but I tested it and it was sad so hear the lion roars without seeing him...
Latest motivation: think about my avatars, and you'll understand... (^^,)
But, if it's a problem, the day I will solve the BD "affair", I can always change that!
About BD compatibility: I have no idea why it doesn't work properly, as in my two PS3 it works flawlessy - maybe it is more forgiving than a standalone BD player... I also opened a thread to seek help to find out how to solve this!
EDIT: forgot to mention: also tested with success with another PS3 of a friend of mine.