IL2 Tank Crew Mission Install ?

[MAC22]

As the title says if you want to download and install some missions how do you install them?
I have a data/mission folder have been told to put all the files for the mission in there although strangely some of my missions include a media or audio folder and within my install there is also a data/audio folder! - so can someone please talk me through how I can install one of these missions correctly? - also worth noting in my missions folder already have a tank folder and then outside this a few _gen.eng type files (all with a different language prefix? - any help appreciated?

[Major Problem]

Just put everything, including media in the missions folder. Feel free to create your own sub-folders within the \IL-2 Sturmovik Battle of Stalingrad\data\Missions folder if you want to organize them. Although you probably wont break anything, don't add the audio files to the data/audio folder.