Here are some new sound files I dug up, they include new external flak explosion sounds which are more lively than the default "thud", a new anti-aircraft gun sound, and new external rocket launch sounds. I recommend also installing Snorri's improved smoke for full effect. Enjoy!

Questions/comments: jerseydvl@alloymail.com
My site:www.geocities.com/jrtempest/index.html

To install: Simply extract the zip file to you WWII Fighters/Data directory and run the installer. Alternatively, you can use Skinmaster v3 to install the sounds as well. A backup of your sim.elb file will be created.