a little how to:
Open VLC media player (VideoLan
Click on Media (medien by me, have the german version), then on convert/save or ctrl+R (shortcut).
Then by the File-folder click on add.
search for your file you want to convert (like "Royal-Navy-march.mp3") and click on open.
Now it should stay added in the folder.
Click on Convert/save.
Now you have a new window.
On the top you see you file which you want to convert.
click on profile and search for "Audio - Vorbis (OGG)".
then click on the tools-symbol.
Click on audiocodec and check for:
Hook on Audio.
NO hook by originaltrack.
Click on "destination file" and put in the path and the name of your new file (don't forget the .ogg).
click on start and bingo you got your music as an ogg-file.
Save them in the music directory of your documents\1C Softclub\Clod directory.
start your game and and enjoy.