If your trial licence has expired you can continue to view your Audio Notetaker files in Viewer Mode.
 

You can still work with your file; the following functions are available:

• Colouring chunks and Sections
• Typing text in the Text or Reference Panes
• Drag and drop images into the Image Pane
• Organise your document using colour
• Use Pause Mode to transcribe your audio
• View your file in Full Screen mode
• Export Text and Images
• TTS and send the audio to the Audio Pane
• Scribe - create text notes from your recordings (you need Dragon Naturally Speaking installed) Windows Only

You will not be able to:

• Save your file
• Record audio
• Import audio, images or slides
• Export audio