Hi - I'm new to Lock-on and have just bought me one :) 
But I found out that with 1.0 or 1.2 after Update the Cockpit-Sounds and all Weapon-Sounds are off and nothing to hear just the warning sounds...   
Under Options - Audio all is switched on and all volumes are nearly 80%-100%    
I'm driving WinXP - SP1 - DirectX9.0c (Hardware-Music-Acceleration off) 
ASUS A7N8X-X with Onboard AC'97 - newest driver.   
Am I stupid or is there a trick to get it working - or is just my SoundCard wrong and I need to get a SoundBlaster from Creative - till now all games just work fine and I think I can handle PCs - so pl don't call me a noob :)   
hopefully to get it running 
Foxy   
btw. in germany near my location has opened a new pub with 360degree Flight-Sim running LockOn 
http://virtual.aero/ :) 
So I came up with this flightsim and left my cockpit of FS2004 :)