This is a continuation of this thread from a few weeks back:
I notice that you've got an SBLive soundcard.
Creative have been shipping a dodgy General Purpose plug-in with their driver updates.
If there's a file called gen_nomad.dll
in your Winamp\Plugins dir, remove it!
If not, then the only other thing you can try is to completely uninstall via Add/Remove Programs & reinstall Winamp 2.72.
Either that, or uninstall & reinstall an earlier version that you had no problems with.