In Ubuntu12.04 Precise Pangolin, Rhythmbox is the default player in the sound menu, the sound menu support also some other audio players like Climentine for exp. In this Tip i will show you how to add some unsupported players to the sound menu, like for example VLC or Amarok. You can do that with just one command.
Remember that this will remove Rhythmbox from the soundmenu and will be replaced by the new player.
Now for example we want to add vlc, we open terminal and we enter the following command:
gsettings set com.canonical.indicator.sound interested-media-players "['vlc']"
If we want to add Amarok, we type:
gsettings set com.canonical.indicator.sound interested-media-players "['amarok']"
If we want to restore Rhythmbox we type
gsettings set com.canonical.indicator.sound blacklisted-media-players "['rhythmbox']"