This value controls the relative volume of 2D voices relative to 3D voices. Lowering these - particularly the number of 3D sound effects - can help you improve performance (the lowest is 16 3D voices and 24 2D voices), reduce 'graphics lag' in certain situations, and may also aid in resolving audio glitches, but will reduce the richness of sounds in the game. The numbers shown for these settings by default will differ depending on your sound hardware. 2D voices are sound effects which only have 1 channel (button clicks and console sound effects for example) while 3D voices have 2 or more channels.
These settings control the number of channels allocated for various sounds in the game. If you wish, you can change the settings here to match your normal in-game screen resolution and refresh rate, and this may reduce the chance of crashes when KOTOR 2 switches to cutscene movies. While several of the options in this section appear tempting to change, none of them appear to have any impact at all on the game. You should change such settings using the in-game options menus, or the Configure button in the Launcher menu, and not here. Details of the major tweaks in each file are covered below, however note that settings which can be easily and completely adjusted using the in-game settings are not covered below. ini files swkotor2.ini and swplayer.ini can be found in your \Program Files\LucasArts\SWKotOR2\ directory and contain the bulk of the performance-related options for KOTOR 2.