I can't get videos from Limewire to play
 

I can get the sound working, but there's no video with it, I've tried it with multiple vids on multiple formats (mostly mp4, as I was told it was what you needed for iTunes.) I tried playing it on Windows Media Player and iTunes, I get sound but that's it. On iTunes, each video has a screenshot so I can tell which one it is, but once I click on it it's only sound.

Help?

It sounds like a codec issue...

Try installing the VLC media player, it has all the codecs pre-installed and can play just about all files...
VLC media player - Overview

Get one of these pacs also...
For XP this codec pac is very good
Download XP Codec Pack 2.0.8 - XP Codec Pack is one of the most complete codec pack
Or for Vista this pac
Vista Codec Package v4.4.7 Beta 4a (freeware)

Another tip to try is sticking with avi files and check them with Bitzi before downloading...
How to use Bitzi Web Lookup .. & How to use Magnet Links & Direct Connect/Browse/Chat

Ive the same problem and download codec for vista.Then went to preview and nothing happened, windows media opened saying `cannot play `.

I would take WW's advice on VLC Media Player, In Post #2. In my opinion WMP STINKS.
VLC Player has Codec's built in and will play most anything.

Ive downloaded vlc and codec for vista, but how do I preview cannot figure it out.A little vlc media player is on screen but I cant seem to use it ... I dont want to mess up..