Please read the following carefully so it isn't confusing. Thanks. 

Where are the Notebook audio files stored ?

Is it in the cloud or on my devices?

Where are the Notebook application audio files stored on my mobile device? It is a tablet.

Where are the Notebook desktop application audio files stored on my computer?

Can I delete them permanently on my tablet or my computer?

I want to save them to my computer. They are taking up too much room on my tablet. 

Thank you