Maybe someone can confirm this.. but your photos are also kept in the directory called "gallery". Every time the page changes, the <Title> automaticly updates itself. Because your photos are in the "/gallery" section, the gallery will always be there. BUT you can change that...I'm just not certain how...
AimEnglish: the folder that holds the file is not relevant unless you have custom modifications.
Yes,you are right. There stands "Gallery" in the setting, because "Galerie" only stands on the main page of the gallery and when i write "Gallery" it stands in every Titel Tag. That is what I want. So, how can I remove "Galerie" from the Titel Tag?
Do as I suggested and remove the word "Galerie" in "Gallery description" (coppermine config), leaving the field empty.
PS: I can't upload a picture because all my pictures are to big. 
We have a "one question per thread" policy you agreed to respect when signing up. Post your uploading issues on the "uploads" sub-board after having read the docs, the sticky thread there and after having searched the board, providing the needed details.
URL of your home page: index.php
That's wrong - it should be the actual URL of your gallery folder without the traling "index.php". Read the docs.
If we wanted to input <title> tag manually, without going through the config, which file would it go into?
I understand that you're trying to help, but please try not adding to the confusion here by asking unrelated questions.
Guys, this thread is very confusing, as you post about different issues in this single thread. That's why we have the "one issue per thread" policy. Not respecting it makes it very hard to keep track of all those issues if you're mashing into one.