Jooki’s internal memory is very limited. You will only be able to upload a maximum of 10 songs onto Jooki’s internal memory.
If you want to upload more audio files, we advise buying a memory card. Jooki supports microSD card up to 32GB.
Find out here how to install your memory card.
These are the audio files supported by Jooki : MP3, AAC (iTunes), OGG Vorbis, FLAC, AIFF, WAV (and some other, do not hesitate to ask). NOT supported: WMA (Windows Media Player), AA (Audible.com)
Here is how to create a playlist and upload audio files to your Jooki.
Once you have installed your memory card and uploaded audio files, you will be able to use Jooki completely offline without any WiFi connection.