Make sure you have your sounds card's latest drivers and DirectX installed'. 'Error during initialization: Miles sound system initialization failed. If I remove it so that no external audio device (neither speakers/headphones nor microphones) are connected, the error message goes as follows:
This error only occurs when I have something plugged in the speaker jack on my computer. Check the readme for possible solutions'. 'DirectX encountered an unrecoverable error. When starting the game, I get the following error message: I recently downloaded Call of Duty 4 from Steam.