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Mplayer Frontends
gnome-mplayer
A simple GUI for MPlayerIt provides a simple and clean interface to MPlayer. GNOME MPlayer has a rich API that is exposed via DBus. Using DBus you can control a single or multiple instances of GNOME MPlayer from a single command.GNOME MPlayer can be used to play media on websites when used in conjunction with Gecko Mediaplayer.
Install gnome mplayer using the following command
sudo apt-get install gnome-mplayer
or click on the following link

Smplayer
Install smplayer in ubuntu 9.10 (Karmic)
Edit your /etc/apt/sources.list file
gksudo gedit /etc/apt/sources.list
Add the following lines
deb http://ppa.launchpad.net/rvm/smplayer/ubuntu karmic main
deb-src http://ppa.launchpad.net/rvm/smplayer/ubuntu karmic main
Save and exit
Install GPG key
sudo apt-key adv
--recv-keys--keyserver keyserver.ubuntu.com E4A4F4F4
Update source list
sudo apt-get update
Install Smplayer
sudo apt-get install smplayer





you could have also told a simplest way to add repository for karmic users
sudo add-apt-repository ppa:rvm/smplayer
Currently Mplayer is a bit broken in Karmic: cannot deactivate screenserver…
What’s wrong with the Smplayer that’s in Ubuntu repositories? I just installed it via sudo apt-get install smplayer without adding any additional repositories and it seems to work fine…