Asus Xonar DS - Broken Record after application close

Hey guys,
I have an Asus Xonar DS after my onboard sound card broke. Sometimes when I close an application (mostly games) a very small sample of the music playing in the application will repeat itself. Windows doesn't detect the source but it shows up on my sound card software. Restarting the computer is only way I know how to fix it.
Thanks for any help!