Sound doesn't work properly and when quitting the game, it locks up

Binary package hint: burgerspace

when running burgerspace from the command line, I get the following output in the terminal:

:~$ burgerspace
seed = 1261112635
init-level-no = 1
ms-per-frame = 55
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d18)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d1c)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d28)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d14)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d14)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d14)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d14)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d1c)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d1c)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d18)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d1c)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d10)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d20)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d14)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d40)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d20)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d44)
playSoundEffect: playChunk(): No free channels available (chunk at 0xbfd27d20)

To quit burgerspace, I have to launch xkill to close the window.

I'm running Ubuntu 9.10

burgerspace:
  Installed: 1.8.3-1
  Candidate: 1.8.3-1
  Version table:
 *** 1.8.3-1 0
        500 http://us.archive.ubuntu.com karmic/universe Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
Architecture: i386
Date: Thu Dec 17 21:03:01 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
NonfreeKernelModules: nvidia
Package: burgerspace 1.8.3-1
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
SourcePackage: burgerspace
Uname: Linux 2.6.31-16-generic i686
XsessionErrors:
 (gnome-settings-daemon:1596): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:1596): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:1686): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:1693): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:3194): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed