Waveforms aren't displayed or sync or quantize doesn't work when I play tracks from a connected USB storage device. Why not?

Enlarged waveforms, as well as features such as sync and quantize, are disabled in the following cases.

- Tracks haven't been analyzed by rekordbox.
- The analysis of the tracks on the unit is incomplete.

Note: 
*When using a track analyzed by rekordbox, functions such as enlarged waveform, sync, quantize, etc. can't be used for tracks that are longer than 3 hours.
*This unit won't analyze a track that's more than 1 hour long.