Sometimes you may find that XBMC add-on cannot be uninstalled normal way via System > Add-ons as Uninstall option is greyed out. This often happens because add-on is installed in a system wide directory. In this case add-on can be deleted manually from the add-on directory. Location can vary depending on your Operating System and version. Couple of examples below:

• Windows 7 32 bit: C:\Program Files (x86)\XBMC\addons
• Windows 7 64 bit: C:\Program Files (x86)\XBMC\addons
• Ubuntu Linux: /usr/share/xbmc/addons

1. Download latest version xbmc-itv-player add-on from code.google.com
   Version 1.0.7 which I tested on XBMC v11.0 (Eden) can be downloaded from here.
2. In XBMC got to System > Settings > Add-ons > Install from zip file
3. Navigate to the downloaded plugin.video.itv_1.0.7.zip and install the plugin
4. Go to Videos > Add-ons where you will find a new entry called ITV

MKV (matroska video) files often come with multiple audio and subtitle tracks. Not all video players allow to select which audio and subtitle track you want to play.
Free Media Player Classic - Home Cinema is my favourite video player and it does allow to switch audio and subtitle tracks in .mkv files.

You can download Media Player Classic from the official website.
It's also included in one of the most popular K-Lite codec pack.

You may have some problem finding where to change tracks as this option is not placed in the most logical place.
You would expect it to be in Play > Audio, but actually you need to go to Play > Filters > ffdshow Video Decoder



Another useful tool working with .mkv files is MKVToolNix. It's an open source, multi-platform  set of tools to create, alter and inspect Matroska files. You can, for example, easily remove unwanted tracks from the file or change which audio track will be default.

Gimp doesn't have built in batch resizing functionality, but it's pretty simple to add it via a plug-in called DBP (David's Batch Processor).

1. Download Windows version of DPB from here.
   (For Linux version check DPB home page).
2. Extract dbp.exe file and copy to: C:\Program Files\GIMP-2.0\lib\gimp\2.0\plug-ins
3. Open Gimp and open Filters > Batch Process
   
4. In David's Batch Processor dialog:
   
   
   • Input Tab: Add files you want to process
   • Resize Tab: Configure resizing settings
   • Rename Tab: Choose where resized pictures will be saved.
   • Output Tab: Select and configure image format.
   
5. Click on Start to begin batch resizing.