Edit: It is no longer necessary to switch audio player before downloading media. Updated instructions:
Downloading media
If you want to be able to use the deck offline and have faster loading, you can download media. For the images, you can optionally change the resolution before downloading as described in the desk’s description. And if you don’t want the audio to be downloaded, see below.
To download media get the addon Localize Media and localize only the cards you need. It takes about one hour for 100 notes, so do a few at a time.
You can expect 500 notes to take up approximately 2GB of space.
Avoiding localizing audio
If you only want to localize the photos and not audio or spectrograms, first do “Notes” → “Find and Replace” src=" with src_=" in the Sounds field.
Then localize the media, and afterwards fix the sounds field again by replacing src_=" back with src=".