Punkie82...
The Bill Clinton files are spam files...So it's always best to use Bitzi before downloading...
How to use Bitzi Web Lookup .. & How to use Magnet Links & Direct Connect/Browse/Chat
For the codecs...
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)