The VoiceTrack data is located at C:\ProgramData\PlayIt VoiceTrack. C:\ProgramData is a hidden folder by default so that folder is best located by pressing Windows Key + R and typing C:\ProgramData\PlayIt VoiceTrack then click OK.
Copy the contents of this folder to the same location on your new computer.
Thanks Jason. That's the SQLite file, yeah?
Yes, the SQLite file is there and there is also a settings.xml file which holds the audio assignments etc.