my previous installing of a software wasnt comleted properly. How to repair it as i cant install any other softwares now?

Dhvanil,
You should reinstall the application. In a terminal (Applications → Accessories → Terminal) type this:

sudo apt-get purge vuze

That is for remove the application, will ask for your password, write it down and it will be removed.
Then install it again by typing:

sudo apt-get install vuze

in the same terminal.

I hope that will be useful,
Ricardo

the following error is shown when i try to remove the program:
deejay@deejay-desktop:~$ sudo apt-get purge vuze
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package vuze is not installed, so not removed
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
  openjdk-6-jre-lib: Depends: openjdk-6-jre-headless (>= 6b17) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

How should i proceed from here?

Better...

So please try from terminal:

sudo apt-get -f install

But to fully check and upgrade your system using terminal:
open a Terminal from the menu Applications->Accessories->Terminal

**Tip: right click with mouse on the top terminal windows title caption and select the menu item "Always on Top"
doing this you will force the terminal window to stay on top of the other windows and you will find very easy
to copy single row from this web page into the terminal...
Something more about using the terminal https://help.ubuntu.com/community/UsingTheTerminal

Then type or better copy and paste a row a time then press enter:
(Tip: select the single row to copy from this page then right click and select copy then click into the terminal window
and to quick paste click with middle button of mouse )

Copy and paste the rows below, copy and paste one row a time (see the **Tip) then press enter:

sudo dpkg --configure -a
sudo apt-get -f install
sudo apt-get --fix-missing install
sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get clean
sudo apt-get autoremove
sudo apt-get update

give your user password when requested, you don't see nothing when you type it, then press enter.

Hope this helps

Thanks marcobra (Marco Braida), that solved my question.

when am installing a music software it shows me an error

E:run "sodo dpkg --configure-a"
E:cache open() report that problem
   this error am getting when i am installing a Gnash SWF player