What is SYNC media metadata?

SYNC uses the metadata of your music files to display information such as artist, track, album, and genre. Metadata is the information embedded in an audio file that is used to identify the content.  

SYNC uses metadata information to build speech commands that you can use to access your media, hands-free via voice commands.

If you have songs that have invalid or missing metadata the songs might not be shown correctly in the music library when browsing it.

While SYNC does not have a specific amount of songs or Gigabytes that can be handled, organising and reducing redundancies in your media files metadata is imperative for the best media playback experience through SYNC.