Another option is also available if you saved the data to a WAV file. You can save a copy of the WAV file to <LabVIEW>\examples\Sound and Vibration\Example Data\...
Then run the example SVXMPL_Getting Started with SVT (Simulated).vi
Select your file in the list of WAV files in the file list. Press the Play wave file button to play the recorded sound through your computer speakers. This VI uses the Play Sound File.vi.
You will also be able to apply several types of measurment analysis to your signal to quickly gage the signal content.
Doug
Enthusiast for LabVIEW, DAQmx, and Sound and Vibration