After weeks of off-and-on trying, I finally used a combination of words in Google that got me to a solution and I'm posting it here in the event someone else might need to do the same thing:
How to Convert PDB to MP3
Programs needed:
- Clie Picture Converter
- Mobile Media Converter
Both are freeware programs downloadable from the internet.
Go to your Palm data folder on your PC. Something like
C:\Program Files\Palm\
[user-name]\Backup
You'll find files like
[xxxxxxxxxxxx]_Vpad.pdb
These are the VoicePad files.
Copy the files you need to a temporary folder
Open Clie Picture Converter, and drag the files from the temporary folder to the Clie Picture Converter window.
New files with .JPG extension will appear in the temporary folder.
Rename these *.JPG files to *.AMR files.
use Mobile Media Converter to convert the .AMR files to .MP3 files.
This is what worked for me.