Hello @CCuenca, @Metaphysical and @nso,
I spoke with engineering and we do not have an officially recommended procedure for this mainly due to the fact that there is a huge variation in how people choose to manage their music files. Also, there are extreme restrictions imposed by iOS on how djay can work with these files.
Having said that, it basically involves 3 steps:
- Transfer the djay media library database file to the other device.
- Transfer the audio files to the other device (e.g. via iTunes/Music, USB drive, iCloud, etc.)
- Relink the audio files on the new device to the items in the media library. This is done by selecting and reimporting the files into My Collection.
NOTE: For macOS to iOS the recommended way to manage audio files is still to use iTunes/Music as this is much simpler and more reliable. In most cases Step 3 above is not required as djay can usually find the tracks in My Collection in the iTunes library automatically.