Presumo que necesitas codecs sudo aptitude install ubuntu-restricted-extras esto te instala varias cosas, [1] #flashplugin-nonfree [i386]     Adobe Flash Player plugin installer #[rec] gstreamer0.10-ffmpeg     FFmpeg plugin for GStreamer #[rec] gstreamer0.10-plugins-bad     GStreamer plugins from the "bad" set #[rec] gstreamer0.10-plugins-bad-multiverse     GStreamer plugins from the "bad" set (Multiverse Variant) #[rec] gstreamer0.10-plugins-ugly     GStreamer plugins from the "ugly" set #[rec] gstreamer0.10-plugins-ugly-multiverse     GStreamer plugins from the "ugly" set (Multiverse Variant) #rec] libdvdread3     library for reading DVDs #[rec] liblame0     LAME Ain't an MP3 Encoder #[rec] msttcorefonts     Installer for Microsoft TrueType core fonts # rec] sun-java6-jre [amd64]     Sun Java(TM) Runtime Environment (JRE) 6 (architecture independent files) # [rec] sun-java6-plugin [i386]     The Java(TM) Plug-in, Java SE 6 # [rec] unrar     Unarchiver for .rar files (non-free version) [1] <a href="http://packages.ubuntu.com/gutsy/metapackages/ubuntu-restricted-extras">http://packages.ubuntu.com/gutsy/metapackages/ubuntu-restricted-extras</a> -- GPG  1024D/82AD866F 2007-05-23 [[caduca: 2008-05-22]]