Install
clicks is available in Ubuntu. [?]
VLC media player
multimedia player and streamer
GStreamer extra plugins
GStreamer plugins from the "ugly" set
GStreamer ffmpeg video plugin
FFmpeg plugin for GStreamer
Non-free codecs - Medibuntu
Non-free codecs
GStreamer plugins for mms, wavpack, quicktime, musepack
GStreamer plugins from the "bad" set
GStreamer plugins for aac, xvid, mpeg2, faad
GStreamer plugins from the "bad" set (Multiverse Variant)
Libdvdcss - Medibuntu
Simple foundation for reading DVDs - runtime libraries
GStreamer fluendo MPEG2 demuxing plugin
GStreamer plugin for demuxing of MPEG2 streams
Amarok
MPlayer Plugin for Mozilla
mplayerplug-in is a Mozilla browser plugin to allow playing embedded
Cheese
Swfdec Flash Player
Tools to play SWF files (Macromedia Flash) on GNOME
Miro Internet TV
GTK+ based RSS video aggregator
Sound Converter
GNOME application to convert audio files into other formats
K3b Movie Player Totem (xine backend)
A simple media player for the GNOME desktop (transitional package)
Audacity
SMPlayer