– FS2004 Supermarine Spitfire Sound Package flight2000it 20 years ago FS2004 Supermarine Spitfire Sound Package. For lovers of the Rolls Royce Merlin engine. This sound package has been put together to give the best representation possible. Included are all startup and shutdown sounds. By Des Braban. 5,5 Mb – FS2004 Supermarine SpitfireFS2004/FSX Supermarine Spitfire Pr XIX– FS2004 Russell Group Supermarine Spitfire