Figure this:
I created a file, .wav, saved it, closed out the app.
I reopened WavePad, and that file would not load.
I tested again, this time saving it as .mp3.
I closed out the app, reopened it then it loaded that .mp3. It played as well as the .wav file created and saved.
It then would open my other audio files and all types.
Without going to the logs all I can figure is it was not registering the filetypes correctly at install.
Remember this is a Mac Os and App not from the store. Sometime it can be unfriendly at first.
Will work with it this eve for use in VideoPad.
Again, thanks for the help.