There are a few reasons why some of your tracks may have not synced:
- Local files (e.g. MP3s) from your personal hard drive can't be synced to Mighty. Mighty can only sync tracks from Spotify. - Spotify has placed content restrictions on the tracks and they are not eligible to be taken offline. The restrictions can be put into place for in specific countries or globally. - Some of Spotify’s playlists (e.g. Rap Caviar) now include video content which can't be synced to Mighty.
If a playlist contains tracks that can't be synced, Mighty will skip those tracks and the tracks that are eligible will be synced.