Thanks AFG and Nigel.
Now before I leave to work I copy my last post:

"Zmago I am using 0S 2.8 because the MS is stable what means I turn it on and all the internal sounds work and I can control external keyboards. The Jack connection tool and the joystick work fine. However I did not find the Gigalibrary folder (in the OS 3.2 was there not now) so I created one in the root folder to place the GigaSounds but I can't take them into the Sampler (may be it is not installed). So I would like to decide in the next days what to buy otherwise my mediastation will only have a few sounds. I have not found the MP3 folder either so I did not use the Mp3 player either

Victor"