well i use quite a lot:
for videos: on my computer i use VLC, div x plus player
on my ipod i use vlc(download able app) and the default one
for music: i use itunes and a game calpled OSU! idk if youve heard of it but i like the graphics and it looks nice so i sometimes use that to play my music xDD
I have a serious question, on my older Desktop (2005-2006) it has a number of different players already installed. Like WMP,RealPlayer and QuickTime Player. I got a Laptop, (last June) and it only has WMP. Why? I want to install other players to have a "choice" when watching movies of any kind.