If you don’t like the default Empathy message box theme or if you want to try something else, you might want to try Ambiance the Adium Message Style Theme for Empathy. You can also use the theme for Emesene and Pidgin. I don’t use Emesene/Pidgin so i only made this guide for installing the Ambiance Adium theme on Empathy.
Here is a guide to install Synfig Studio on Ubuntu 13.04. You can install Synfig Studio Using the Ubuntu Software Center.
Synfig Studio is a free and open-source 2D animation software, designed as powerful industrial-strength solution for creating film-quality animation using a vector and bitmap artwork. It eliminates the need to create animation frame-by frame, allowing you to produce 2D animation of a higher quality with fewer people and resources. Visit the Synfig Studio Homepage.
Here is a guide to install Audacious audio player on Ubuntu 13.04. You can install Audacious by adding the WebUpd8 PPA for Audacious maintained by Alin Andrei.
Audacious is an open source audio player. A descendant of XMMS, Audacious plays your music how you want it, without stealing away your computer’s resources from other tasks. Drag and drop folders and individual song files, search for artists and albums in your entire music library, or create and edit your own custom playlists. Listen to CD’s or stream music from the Internet. Tweak the sound with the graphical equalizer or experiment with LADSPA effects. Enjoy the modern GTK-themed interface or change things up with Winamp Classic skins. Use the plugins included with Audacious to fetch lyrics for your music, to set an alarm in the morning, and more. Visit the Audacious Homepage.