I've just released version 0.3.1 of 'Havoc 3D'. You can download the update on the downloads page.

This update includes the following changes and fixes:

• Increased the number of mixing channels from 8 to 16.
• Added a slight key delay to intermission screens.
• Added missing ceiling and floor textures in map 2.
• Improved the wording in the help section of the map editor.
• Added an additional "--windowsize " argument (e.g., "--windowsize 640 480") to change the window size in windowed mode.