After presenting audio stimuli, SuperLab automatically presents noise (as in a fMRI scanner). How to get rid of this?

If this is what I think it is, we’ve fixed the bug for the upcoming release of SuperLab 4.0.8. Can you post one of the audio files that exhibits this behavior? Also, are you running SuperLab under Windows or Mac OS X, and what specific version of SuperLab 4 are you using?