While installing a game, most audio problems arise due to hampering of new updates or updating the audio drivers etc. But unless its a hardware problem, these can be fixed by updating The Direct X End User Runtime.
Some games require a specific update for its audio functions (for eg. recently I fixed my Prototype 2 'audio.dll' error by downloading the June 2010 DirectX Patch). So its always better to first explore the net on specific and localized solutions to fix your problems faster.
~ If your game's audio is not working, use search terms on Google (or elsewhere) like " <Name of the Game> audio not working.
~ If results are not satisfactory, try searching the association name (for eg. for Microsoft Games, use 'how to fix audio errors of Microsoft games'
For the 90% users, audio problems are fixed by updating the latest Direct X Runtime Component. You can find it here: Click Here (First Link)
Make sure you let the automatic installer work properly (let it download all the files). Restart your computer if required.
~ VKB
