Have you "accidentally" downloaded those files?
If so, go to LW>Library>Saved Files.......from there you can delete the already complete downloaded files.
If they haven't downloaded completely (i.e. are still in your download window) you can go to LW>Library>Incomplete Files and delete them from there.
In case your victorian better half is a computer geek I'd reckon using a "eraser" program and locating with it the files in the Folder "Shared" and "Incomplete" most likely located under: C:\Documents and Settings\<your.computer.name>\Shared(Incomplete, respectively) and delete them with said program under the DoD function...
Cheers
FOTH