Enable Cover-Preview for Audio Files for KDE's Dolphin in Kubuntu 13.04

Unfortunately cover art preview is still not included in KDE (see Bug-report), you can enable that feature by yourself by building and installing the Preview Plugin of RazrFalcon from kde-look.org.

So, if you ever wanted a cover art preview for audio in Dolphin, e.g. like Nautilus has, here's my guide to make it work in Kubuntu (13.04):

1. Install the necessary dependencies for building:
   
   sudo apt-get install cmake automake kde-workspace-dev libtag1-dev libqt4-dev libflac++6 libflac++-dev libtag-extras-dev
   
   
2. Get the sources of the plugin:
   
   wget http://kde-look.org/CONTENT/content-files/145088-AudioThumbs-0.2.tar.gz
   
   
3. and create a folder for it to unpack it:
   
   mkdir ~/audiothumbs;
   tar -zxvf 145088-AudioThumbs-0.2.tar.gz -C ~/audiothumbs
   
   
4. Cd into the folder with sources and create a build dir and cd into it:
   
   cd ~/audiothumbs; mkdir build; cd build
   
   
5. Now prepare building with cmake:
   
   cmake -DCMAKE_INSTALL_PREFIX=`kde4-config --prefix` ..
   
   
6. Finally compile it with:
   
   make
   
   
7. and install it with:
   
   sudo make install
   
   
8. Update KDE's settings to find the new plugin:
   
   kbuildsycoca4
   
   
9. End all open Dolphin windows and reopen it. Go to "Control -> Configure Dolphin... -> General -> Previews" and enable "Show previews for Audio files"
   
   
10. Now move to your folder with music and enable preview for the folder and enjoy the cover art in dolphin
    

Build Umbrello UML modeler from Git in K/Ubuntu 13.04

Umbrello is a neat KDE-tool to create UML diagrams. If you want to test the latest code, why not get the git version ?

Here's a small guide to build compile latest umbrello from git:

1. Get prerequisites:
   
   sudo apt-get install cmake make kde-workspace-dev libboost-all-dev libxml2-dev git-core
   
    
2. Get source from git:
   
   git clone git://anongit.kde.org/umbrello
   
   
3. Configure umbrello:
   
   cd umbrello; cmake -DCMAKE_INSTALL_PREFIX=`kde4-config --prefix`
   
   
4. Compile it:
   
   make
   
   
5. Install it:
   
   sudo make install
   
   

Want to run dev version in parallel with the stable version ? No problem just change cmake according to the Umbrello FAQ. 

Kubuntu 13.04 - Enable proper auto spell-checking in KDE

Unfortunately Kubuntu does not install the required packages to enable proper application-wide spell-checking. Here is a guide to enable auto spell-checking for all applications in Kubuntu.

1. Install the required packages ($lang is your language shortcut, e.g. en or de):

sudo apt-get install kde-l10-$lang language-pack-kde-$lang aspell-$lang hunspell-$lang

2. Setup and enable auto spell-checking in KDE:

 Open the KDE system settings and go to Locale

There select Spell Checker and enable Automatic spell checking enabled by default and check your default language (in this case German (Germany)). If you finished set confirm with Apply.

In some applications spell-checking is now enabled by default, like LibreOffice Writer in other you have to enable it, like KMail (New Message -> Right-Click).

Enjoy !

Install latest Homerun version in Kubuntu 13.04

Install latest Homerun version in Kubuntu 13.04

Just a small tutorial how to build and install the latest version of Homerun in Kubuntu 13.04 as the PPA is slightly outdated:

1. Get the latest stable release and extract it or get the git snapshot (via git clone git://anongit.kde.org/homerun)
   
2. Install necessary dependencies: 
   
   sudo apt-get install libkonq5-dev kde-workspace-dev kdelibs5-dev
3. Go into folder:
   
   cd homerun
   
   
4. Create build directory and go into it:
   
   mkdir build; cd build
5. Build it:
   
   cmake -DCMAKE_INSTALL_PREFIX=`kde4-config --prefix` ..
   
   
6. Compile it:
   
   make
7. Install it:
   
   sudo make install
8. If you already run an older version of Homerun killit and restart homerun:killall homerunviewer; homerunviewer

There we go ! You can easily remove it via sudo make uninstall from install dir.