Install
clicks is available in Ubuntu. [?]
VLC media player
multimedia player and streamer
MPlayer
movie player for Unix-like systems
Amarok
easy to use media player based on the KDE 4 technology platform
Swfdec Flash Player
Tools to play SWF files (Macromedia Flash) on GNOME
Miro Internet TV
GTK+ based RSS video aggregator
SMPlayer
complete front-end for MPlayer
Movie Player Totem (xine backend)
A simple media player for the GNOME desktop (transitional package)
Movie Player
A simple media player for the GNOME desktop based on GStreamer
Kaffeine
versatile media player for KDE
Audacious2
small and fast audio player which supports lots of formats
Banshee Media Player
Media Management and Playback application
VideoCut
application for creating compositions of screenshots from videos
Exaile Music Player
flexible audio player, similar to Amarok, but written in GTK+
Listen Music Player
music player and manager for GNOME
KPlayer
A KDE media player based on MPlayer
Dragon Player
simple KDE 4 video player
Enqueue and play with Xfmedia
Xfce media player
XMMS2tray
System tray integration for XMMS2
PyKaraoke
free CDG/MIDI/MPEG karaoke player
GNUsound
multitrack sound editor for GNOME