moataz@moataz-pc:~$ sudo apt-get install ubuntu-restricted-extras
[sudo] password for moataz:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  flashplugin-installer gstreamer0.10-fluendo-mp3
  gstreamer0.10-plugins-bad-multiverse gstreamer0.10-plugins-ugly
  gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly libnss3-1d libsidplay1
  libsrtp0 oxideqt-codecs-extra ubuntu-restricted-addons unrar
Suggested packages:
  x-ttcidfont-conf ttf-bitstream-vera ttf-dejavu ttf-xfree86-nonfree xfs
  frei0r-plugins sidplay-base xsidplay srtp-utils
Recommended packages:
  libavcodec-extra-53
The following packages will be REMOVED:
  oxideqt-codecs oxideqt-codecs:i386
The following NEW packages will be installed:
  flashplugin-installer gstreamer0.10-fluendo-mp3
  gstreamer0.10-plugins-bad-multiverse gstreamer0.10-plugins-ugly
  gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly libnss3-1d libsidplay1
  libsrtp0 oxideqt-codecs-extra ubuntu-restricted-addons
  ubuntu-restricted-extras unrar
0 upgraded, 13 newly installed, 2 to remove and 33 not upgraded.
E: Could not get lock /var/cache/apt/archives/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/cache/apt/archives/
moataz@moataz-pc:~$