the game. This problem is seen most in Ubuntu 9.04 and higher.

	This is because recent versions of the PulseAudio sound server are

	configured to use timer-based audio scheduling rather than

	interrupt-based audio scheduling. Configuring PulseAudio to force

	use of interrupt-based scheduling may resolve sound problems for

	some users. Under recent versions of Ubuntu Linux (9.04 and higher)

	this can be accomplished by changing the following line in the

	/etc/pulsa/default.pa file:

		load-module module-udev-detect

	to

		load-module module-udev-detect tsched=0

	Note that PulseAudio must be restarted for changes to take effect.

	Older versions of PulseAudio may use the module-hal-detect module

	instead. Adding tsched=0 to the end of that line will have a similar

	effect.

	Another possible solution is selecting the "pulse" backend of SDL

	by either using "SDL_AUDIODRIVER=pulse openttd" at the command

	prompt or installing the 'libsdl1.2debian-pulseaudio' package from

	Ubuntu's Universe repository. For other distributions a similar

	package needs to be installed.