Filter them out then. Use your Keyword filters. Go to LW's menu bar, Tools>Options>Filters>Keywords & add the words
.wmv &
.jpg & remember you can add or remove keyword filters anytime so long as you use the Apply button. Also tick the Ignore Adult Content. See sample image:
Adding to your Keyword Filter (click on this blue link). This includes instructions for both LW 4 & 5.
If you're using LW 5, you'll find the keyword filter in a different place. In LW tools > options > security or Tools > options > search. Click on the 'Filter Keywords' button. Now add whatever keywords to the list & click ok. Can add extensions separately in that section. Once that page has closed, click ok on the larger options page as well. (See sample image for LW 5 in above link)
You might want to add a few more keywords such as slut, teenager, etc.
A full list of terms you can add to the filter to
eradicate porn search results:
(1) click on Text attachment below called
BANNED_WORDS. (This file will open up formatted properly in
WordPad &
TextEdit, do
NOT open the text document in Notepad!!!)
(be wary of some of these words, they may clash with what you are searching for, so they can be added & removed as you need.)
(2) The following '
extra' words from the following page link have
already been added to the text attachment:
Keywords worth adding to your Keyword Filter (click on this blue link). These words include different types of spam: porn, advertisements, trojan-music/videos, etc.
* The entirety of (1) & (2) have been added to the text document attached below. Click attachment to download. Open with WordPad or TextEdit or a superior word processing program!

(Reiterating, do
not open the text document with Notepad! Notepad is too basic to read the formatting. A hopeless piece of programming by M$!)