4 mods that were designed/made to fix things in the game have been uploaded to the Database.
3 of the 4 are Sound Fixes, specifically for Single Player (maps). They all differ a bit, though the Uber Sound Fix seems to have the most fixes in place.

All uploaded files are shown below:

Title: Vertex Fix
Creator: GiffE
Link: http://www.mohaaaa.co.uk/AAAAMOHAA/content/vertex-fix
Short Description: Improves textures, fixes the 'shimmering' models (e.g. sandbags).

Title: SP Dialog Sound Fix
Creator: -
Link: http://www.mohaaaa.co.uk/AAAAMOHAA/c...alog-sound-fix
Short Description: The sounds of the Players Dialog in Single Player maps has been fixed.

Title: SP Sound Fix V2
Creator: sorridstroker
Link: http://www.mohaaaa.co.uk/AAAAMOHAA/c...p-sound-fix-v2
Short Description: Single Player Sound Fix for all SP maps (2 versions included).

Title: SP to MP Uber Sound Fix
Creator: -
Link: http://www.mohaaaa.co.uk/AAAAMOHAA/c...uber-sound-fix
Short Description: Fixes a lot of sound issues in SP (to MP) maps, also fixes weapon sounds in SP maps.