happened to me so take the real deal here, reinstall your soundblaster cinema lol =b
before you reinstall it just right click on it at the system tray and click exit.
during the installation the installer dont alarm you about this dll being in use, the installer ignore it and continue w.o copy it to your system. were the deletes of it is at the reboot time.
soundblaster cinema fault.
close your soundblaster cinema by right click, exit and reinstall. done