How to change title from file name

[lxp]

Have a look here:

Replace a string of characters + Renaming tag titles from file name

Well, it's a bit too expert for me. I didn't think it needed to go that deep to get this result (even if after, with the button, it's an easy process). I'll keep this to show to a friend who will surely do this easily. Many thanks Ixp, I appreciate …