Okay I've just checked on my computer where I unpacked the patch file...
If you extract everything in the patch EXE to somewhere temporary, you should have folders like this:
MAINDIR\Media\Dir\Cst\
In Cst there are a bunch of cxt files, which I was referring to.
MAINDIR is equivalent to your In Memoriam install folder (c: \program files\in memoriam\ most likely)
If you just copy the Media folder and paste it into your In Memoriam folder, it will overwrite all the correct files and away you go.
Hopefully this is a bit clearer!
If you're having trouble extracting the patch I could just zip it and upload it somewhere
