If you use mods, better use a local installation in your user directory.
Making manual changes in installations made by your packaging system is not a good idea
Here is an installer (linux32 bit):
http://www.liflg.org/?catid=7&gameid=58Not all (beta)mods work in linux, because there are often case sensitivity problems.
If you want to test a mod with linux start with a mod from
www.titusgames.de, they are all linux ready ( I made them )