[xp-u] Truble with booting XPilot

[<ope...@ho...>]

Hi!
I recently found this game, and downloaded it. When I tried to lounch it, I 
got this:

xpilot: WARNING: Invalid keysym "Linefeed" for key "keyFireShot".
xpilot: ERROR: Xpilotrc_read: Failed to open file "/home/martin/.xpilotrc": 
(No such file or directory)
xpilot: WARNING: SDL_ttf initialized.
xpilot: WARNING: 
============================================================
xpilot: WARNING: VERSION                   = 4.7.2
xpilot: WARNING: PACKAGE                   = xpilot-ng
xpilot: WARNING: Conf_localguru()          = 
xpi...@li...
xpilot: WARNING: Conf_datadir()            = /usr/share/games/xpilot-ng/
xpilot: WARNING: Conf_defaults_file_name() = 
/usr/share/games/xpilot-ng/defaults.txt
xpilot: WARNING: Conf_password_file_name() = 
/usr/share/games/xpilot-ng/password.txt
xpilot: WARNING: Conf_mapdir()             = 
/usr/share/games/xpilot-ng/maps/
xpilot: WARNING: Conf_default_map()        = ndh.xp2
xpilot: WARNING: Conf_servermotdfile()     = 
/usr/share/games/xpilot-ng/servermotd.txt
xpilot: WARNING: Conf_robotfile()          = 
/usr/share/games/xpilot-ng/robots.txt
xpilot: WARNING: Conf_logfile()            = 
/usr/share/games/xpilot-ng/log.txt
xpilot: WARNING: Conf_localmotdfile()      = 
/usr/share/games/xpilot-ng/localmotd.txt
xpilot: WARNING: Conf_ship_file()          = 
/usr/share/games/xpilot-ng/shipshapes.txt
xpilot: WARNING: Conf_texturedir()         = 
/usr/share/games/xpilot-ng/textures/
xpilot: WARNING: Conf_fontdir()            = 
/usr/share/games/xpilot-ng/fonts/
xpilot: WARNING: Conf_sounddir()           = 
/usr/share/games/xpilot-ng/sound/
xpilot: WARNING: Conf_soundfile()          = 
/usr/share/games/xpilot-ng/sound/sounds.txt
xpilot: WARNING: Conf_zcat_ext()           = .gz
xpilot: WARNING: Conf_zcat_format()        = gzip -d -c < %s
xpilot: WARNING: 
============================================================
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
xpilot: ERROR: Could not find a valid GLX visual for your display
xpilot: ERROR: Could not initialize SDL, check your settings.


So.. what should I do? I am using the latest Ubuntu and used aptitude (I 
have also tried apt-get, to see if aptitude missed something (first time 
using aptitude)) to download it. I don't know more about SDL than it's used 
for graphics and stuff.

Thank you,

Gasten

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