Question: There are no system sounds as far as I can tell and there is no option for setting this in settings. Speakers are working fine as I'm able to play Youtube Videos. 

Its a fresh 14.04 LTS install.

All help is appreciated. 

Edit: I'm sorry for not putting things in better words. Yes, Youtube sounds and Songs, movies etc are working fine. Its just sound indication/system sounds which were played as a feedback from system during events. 
E.x:Login sound.

2nd Edit: I was able to get Log-in sound working by following [this](http://ubuntuforums.org/showthread.php?t=1869787&page=2).
However, nothing else has worked to get other sounds working which are mentioned in there.

3rd Edit:

Problem;

```
XXXXX:~$ xfconf-query -c xsettings -p /Net/EnableEventSounds
false
XXXXX:~$ xfconf-query -c xsettings -p /Net/EnableInputFeedbackSounds
false

```

Found solution, looks like this was set to false so I had to change it to True using following commands, not sure why it was on false though.

```
xfconf-query -c xsettings -p /Net/EnableEventSounds -s True
xfconf-query -c xsettings -p /Net/EnableInputFeedbackSounds -s True

```

Answer: 
This drove me crazy. Make sure Pulse Audio Volume Control is installed. 
To install open a terminal (`Ctrl`+`T`) and type `sudo apt-get install pavucontrol` 

This took me forever to find but worked like a charm.
Search for `Pulse Audio Volume Control` in XFCE menu, Go to `playback` section, you will find the system sounds section. It must have been muted

![enter image description here](https://i.stack.imgur.com/gnp1b.png)