I just installed X3 Reunion(beta) of course

Because I did install Linux Ubuntu 12.10 yesterday, I'm not very firm with Linux. That brings me to some questions. Eventually stupid ones but......
1. How do I free the mouse out of the window? I tried a couple of key combinations but none of that worked, and I did not find anything with google (maybe wrong keywords?)
2. How to start the game from the terminal, As far as I know I just have to go to the Folder and type in the name of the program. Which of the programs in the Egosoft/X3 Folder is it?
3. Does @timon have a special wish for the start scenario?
And something else - because I'm german does anyone know if there is a list somewhere with the translations English - German for names of the weapons/ships/stations/sectors/commodities
Ciao Hans
Btw my system: Ubuntu 12.10 64bit, Gigabyte P35 DS3 Mobo, Pentium Dualcore E6600 @3Ghz, Leadtek nVidia GTX280 1Gb with proprietary nVidia 304 driver , Ram 6Gb,
3Tb HDDs, Internal Sound Realtek via S/PDIF,
Joysticks: Logitech Extreme 3D Pro & Saitek Cyborg 3D Gold
Keybord: IBM SK 8820