[SOLVED] Broken Audio System

[Yoru3]

I entered
sudo apt-get --reinstall install alsa
and got

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Note, selecting 'alsa-base' instead of 'alsa'
The following packages were automatically installed and are no longer required:
  i965-va-driver libao-common libao4 libcec2 libgdata-common libgdata13
  libgoa-1.0-0b libgoa-1.0-common libgssdp-1.0-3 libgupnp-1.0-4
  libgupnp-av-1.0-2 liblockdev1 libmediaart-1.0-0 libmicrohttpd10 libnfs1
  liboauth0 libpcrecpp0 libshairplay0 libshairport1 libssh-4 libtinyxml2.6.2
  libtracker-sparql-0.16-0 libva-glx1 libva-intel-vaapi-driver libvdpau1
  python-bluez ttf-dejavu-core
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 151 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu/ trusty/main alsa-base all 1.0.25+dfsg-0ubuntu4 [151 kB]
Fetched 151 kB in 0s (226 kB/s)
(Reading database ... 118234 files and directories currently installed.)
Preparing to unpack .../alsa-base_1.0.25+dfsg-0ubuntu4_all.deb ...
Unpacking alsa-base (1.0.25+dfsg-0ubuntu4) over (1.0.25+dfsg-0ubuntu4) ...
Setting up alsa-base (1.0.25+dfsg-0ubuntu4) ...

But still no sound

So I entered
sudo apt-get --reinstall install pulseaudio
and got

Reading package lists... Done
Building dependency tree     
Reading state information... Done
The following packages were automatically installed and are no longer required:
  i965-va-driver libao-common libao4 libcec2 libgdata-common libgdata13
  libgoa-1.0-0b libgoa-1.0-common libgssdp-1.0-3 libgupnp-1.0-4
  libgupnp-av-1.0-2 liblockdev1 libmediaart-1.0-0 libmicrohttpd10 libnfs1
  liboauth0 libpcrecpp0 libshairplay0 libshairport1 libssh-4 libtinyxml2.6.2
  libtracker-sparql-0.16-0 libva-glx1 libva-intel-vaapi-driver libvdpau1
  python-bluez ttf-dejavu-core
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 645 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu/ trusty/main pulseaudio i386 1:4.0-0ubuntu11 [645 kB]
Fetched 645 kB in 0s (661 kB/s)   
(Reading database ... 118234 files and directories currently installed.)
Preparing to unpack .../pulseaudio_1%3a4.0-0ubuntu11_i386.deb ...
Unpacking pulseaudio (1:4.0-0ubuntu11) over (1:4.0-0ubuntu11) ...
Processing triggers for ureadahead (0.100.0-16) ...
ureadahead will be reprofiled on next reboot
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
Setting up pulseaudio (1:4.0-0ubuntu11) ...
Processing triggers for libc-bin (2.19-0ubuntu6.4) ...

VLC now works again and produces music sound ouput.

Not sure what the libs are.

This time I'll install rhythmbox first.

rhythmbox reinstalled and both vlc an rhthmbox produce music sound output.

installed grilo-plugins-0.2  via synaptic package manager, since it was listed, which also installed libgrilo-0.2.1

However,although both vlc and rhthmbox play local mucic okay, rhthmbox does not list the grilo plugin in tools.
Is this because I used synaptic, which doesn't seem to know about rhthmbox.

Should I deinstall the plugin using synaptic, and try installing with apt-get, although I seem to recall It didn't appear in rhythbox tools when the system was broken.

It seems that the plugin is going to the wrong place, which means I can't get upnp network server music.

As a BTW although local music is now okay, I seem to have lost the machine sounds ie. login and logout etc.

In summery, pulseaudio was broken and reinstalling seems to have fixed it.
But the rhythmbox plugin seems to be either going to the wrong place, or is associated incorrectly.

where are these plugins supposed to go.