This is a sound pack for the Soyuz 7k Series addon. It will add random radio comms in the cockpit. As an extra, it includes a small correction to the landing thruster's location.
Sounds were taken from http://www.svengrahn.pp.se/sounds/sounds.htm, with permission from the author, Sven Grahn. See the doc for a complete list of credits.Update:This is now included in the Soyuz 7k Series addon.