Title Alias instead of Title with Short URLs

I use short URLs so the url displays SECTION and CATEGORY TITLES (instead of NAMES).
Is it possible on the same time to have TITLE ALIAS in the url for content items (instead of TITLE)?
It drives me crazy to solve this problem

Two remarks:
1) I use Joomfish
2) When I use long URLs, it is ok (Title Alias of content items is displayed)

If you use short URLs title_alias will be used in the URL for content items.

If you use short URLs title_alias will be used in the URL for content items.

I wish but it is not the case...
When I opt for long URLs, title_alias is used in the URL for content items and when I opt for short URLs, title is used.
Is it a bug somewhere?
Here are more infos which can maybe be helpful:
I use SEF Advance 5.4.2

MySQL Version
5.0.45
Perl Version
5.8.8
PHP Version
4.4.7

Here is the config panel if it can help
[img]http://config

Sorry. I totally mixed up!
Actually, I want to use long URLs and title_alias for content items.
Cheers