Hey techpassion,
It may be possible to interface between your sound recorder software using ActiveX or other communication method such as calling the DLLs directly. While not impossible, this method may prove difficult. LabVIEW has built in VIs that interface with Windows and your sound card for recording. I think this would be an easier method since this functionality has already been built into LabVIEW. The VIs that you could use in LabVIEW 8 are located in the Programming » Graphics & Sound » Sound palette.
Hope this helps!
Andy F.
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National Instruments