Removing unwanted Audio Tracks and Subtitles from MKV

Hi - After browsing though previous threads - I came across AVI-MUX.

But unfortunately it does not work.New file has exactly the same number of audio tracks/subtitles available even after process is finished.

I am trying to do the same because I have LG LED TV which does not play English Audio Track and English Subtitles which I want.

I can guess that Italian Audio Track and Subtitiles in the file is forced - how do I remove that ?

Many Thanks

 

Use MKVMerge-GUI (part of MKVtoolnix) to load the .mkv file, uncheck the subs or audio that you don't want and 'Start muxing' the new file.
http://www.videohelp.com/tools/MKVtoolnix