First thing to do is NOT to re-install. 99% of the time it is an easy fix.
Take a breath. Check your speaker wires....check your sound settings....etc. There is a sound setting in IL-2 Setup. Make sure it's checked.
Aviar
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Intel Core 2 Duo E8500
Intel DP43TF Motherboard
3GB DDR2-800 PC6400 Dual
NVIDIA GTX 260 - 896MB
Creative X-Fi
Logitech X-530 5.1 Speakers
24" Acer LCD - P241W
Logitech G15 Gaming Keyboard
CH FighterStick-Pro Throttle-Pro Pedals
TM Tacticalboard
GoFlight GF-T8 Module