Pausing SlideSoundOut with spacebar Press

Hi,

I’ve designed an experiment where a visual and auditory stimulus are combined in a slide. I need the visual stimulus to disappear and the sound stimulus to stop playing with spacebar press (and reappear with subsequent spacebar press), and to log the number of spacebar presses. Participants should be able to toggle these stimuli as many times as they want during a 12 second period, after which the slide terminates. I have implemented code in an in-line object for this as follows:

Dim StimulusState As SlideState

Set StimulusState = StimulusDisabledControls.States("Default")

DISABLED_RT = StimulusDisabledControls.RT

Dim StimulusImage As SlideImage

Set StimulusImage = CSlideImage(StimulusState.Objects("Stimulus"))

Dim StimulusAudio As SlideSoundOut

Set StimulusAudio = CSlideSoundOut(StimulusState.Objects("aStim"))

If StimulusDisabledControls.InputMasks.Item(1).Responses.Count > 0 Then

            If StimulusImage.Width = "0%" Then

                  StimulusImage.Width = "100%"

                  StimulusAudio.Play

                  StimulusAudio.ActiveBuffer.Play

                  SpacebarCount = SpacebarCount + 1

                  WritePort &H378, SPACEBAR_PRESS

                  sleep 20

                  WritePort &H378, 0

            Else

                  StimulusImage.Width = "0%"

                  StimulusAudio.Stop

                  StimulusAudio.ActiveBuffer.Stop

                  SpacebarCount = SpacebarCount + 1

                  WritePort &H378, SPACEBAR_PRESS

                  sleep 20

                  WritePort &H378, 0

            End If

            GoTo StimulusDisabledContinue

End If

(For refrence: Stimulus = Visual stimulus, aStim = Auditory Stimulus, StimulusDisabledContinue = a label in the procedure)

This works fine for the visual stimulus, but not the auditory stimulus. The error message I’m getting is that Play is not an assignable method of the object. If I comment out that line, it also does not seem to stop the auditory stimulus playing with the later command. Does anybody know why that is, or could they point me down a better route for what I’m trying to do? Thank you!

Haydn.