Currently the d2sound.dll file is still listed as an unknown file. This is nothing really to worry about since there are thousands of DLL files that still need to be categorized. The good news is that you do not need to know what the file belongs to in order to check to see if it is a legitimate Windows DLL error or not.
ZookaWare created ZookaWare PC Cleaner to check the credibility of al registry related errors. Since the d2sound.dll file is a DLL or registry file, ZookaWare PC Cleaner can perform a free computer scan checking for any security threats. Once the free scan is complete, you are given an option to purchase a license to resolve any issues it finds.
Running ZookaWare PC Cleaner on a regular basis will prevent future registry errors from occurring while keeping your computer running like new. If you are still not happy, then they offer a unique 60-day money-back guarantee.