Media players for youtube vids

Okay now i know you've heard of youtube right. well i use firefox and there is an extention that alows you to download said video's. I need to know what kind of media player i need to play them. i use WMP 11 beta, and all i get is the sound like nail on a chalk board and the visulization goes crazy. no other program i have will open them. here is a list of the program i have tried.

Mozilla firefox/lolifox
IE
WMP 11 beta
Word 2000
Nero Media player
Note pad
Adobe reader
Power DVD
Any idea what i need

 

www.divx.com might work for ya, i know the codecs there are widely used amongst downloaded media files. also i would use www.winamp.com for a media player hope this helps :|

 

YouTube uses "Flash Video" (.flv) format and you pretty much need a player specifically for that. Do a search for FLV Player, that's what I use.

 

VideoLan which is freeware.