@Subbzzz, Kubuntu uses 'Adept Package Manager' not Synaptic!!
@Infra_red_dude, Have you installed gcc, g++ & other utilities for compiling the Source?
In case you haven't ,Open the Terminal Window (Konsole) & type:
$ sudo apt-get install build-essential
This will install gcc, g++ & other utilities needed for compiling the source.
Press 'Alt + F2' , this opens the 'Run Application' dialog, type adept,
click on 'Run'. This should open the Adept Package Manager. You can search
for the package you want to install there.