A first time user may have a negative experience with the player during a library update.  Music may not immediately appear or UI performance may be sluggish.

The client UI should also notify the user of the library update operation.  This will provide feedback.  This feedback may be helpful to a positive user experience.  If no feedback, the user may have a negative review of the client's performance.

Note, I experienced mentioned performance during a library update.  I thought the sluggish UI (and slow queued response to button presses) was normal for the box.  For a day, was ready to return the box back to Slimdevices.  An informative message would have been helpful in my decision making.