Anything is possible. Look to the left of the audio track/s. Is the speaker muted (red X)?
Look at the clips. Is the speaker muted there?
Is the volume slider at the left of the tracks fully to the right?
Install the suggested version. Of course, retain your registration info.
If no go. close the program and use the PC's file manager (Windows Explorer) to locate these folders. Delete all files that they contain.
Go to Control Panel | PROGRAMS AND FEATURES and uninstall VP. Then install the suggested version of Videopad...
"C:\Program Files (x86)\NCH Software\Components" or "C"\Program Files\NCH\ software\Components"
"C:\Users\<PC name>\AppData\Roaming\NCH Software\Components"