Is this for an iPhone? I'm not sure what the "scrubber" is, and it looks like the link didn't work.
Usually if your playing some kind of music, you can "shuffle" the songs. Shuffle means that the songs will play in a random order and that the player will just pick the next song.
"Repeat" means that the song will play again, or the entire playlist will play again.
Again, I don't know (yet) what scrubber means.
Student or Learner