Hi, I am total newbie... I have some tracks.
For example:
Boriqua Tribez - Sexo (B1 Side)
And I want change it to this: (see screenshot)
How can I change my mp3 files with one action? Thanks
You may use Converter/Filename - Filename:
Mask old filename: %1 - %2
Mask new filename: $upper(%1) - %2
From: Boriqua Tribez - Sexo (B1 Side).mp3
To: BORIQUA TRIBEZ - Sexo (B1 Side).mp3
Using action tag format regular expression function:
$regexp(%_filename%,(.+?)( - .+?),\U$1$2)
or
$regexp(%_filename%,(.+?) - (.+?),\U$1 - $2)
DD.20080806.1354.CEST
It works fine, very thanks 
I forgot. I need every first letter in track title with Capitals... so:
ARTIST - some track
change to:
ARTIST - Some Track
Following DetlevDs explanation:
(Converter/Filename - Filename)
Mask old filename: %1 - %2
Mask new filename: %1 - $caps(%2)
You owe me a Guinness! 