Playing Quicktime

The following was taken from eeeuser.com

Downgrading MPlayer

1. Open the console (In easy mode, press ctrl-alt-T. In advanced desktop, it's on the start menu, under system, or press alt-F2 and type Konsole.)
2. In the console, type sudo kwrite /etc/apt/sources.list
3. Add the line deb http://http.us.debian.org/debian/ etch main non-free contrib (copy from here and paste in kwrite by right-clicking and choosing paste)
4. Save and exit
5. In the console, type sudo apt-get update
6. Then type sudo apt-get install mplayer=1.0~rc1-12etch1 (if your console window has a white background, you can copy from here and right-click in the console window to paste)
7. Type sudo kwrite /etc/apt/sources.list
8. Find the line deb http://http.us.debian.org/debian/ etch main non-free contrib and put # (a hash or number sign) in front of it. This will disable the debian repository, so that you don't accidentally install incompatible software.