Questions to Jeremy Soule

[Steiner]

I have a question for Jeremy Soule.

Jeremy, Will your music be featured on both the European and the North American versions of IL-2 Sturmovik: Birds of Prey?

The reason I ask is because I saw this a while back:

"Jeremy Soule (KOTOR, Oblivion) and Joss Ackland (Lethal Weapon 2) performing on 1C Publishing’s IL-2 Sturmovik: Birds of Prey. Soule will be applying his unique talents to composing an exclusive European soundtrack for the game, whilst Ackland’s momentous, timeless and distinctive tones will be the backbone of the UK and US version of the game’s narration."

http://www.worthplaying.com/article.php?sid=62206

What does exclusive European soundtrack mean?