jukebox music does not loop

I'm wondering why jukebox looping was removed from the game when it was just added in 13w43a. Jukeboxes are pretty useless if they don't loop.

I agree, I think this should be included, or perhaps as an option.

There's a bit of discussion about this on MC-37409. The description there is... even worse than the paltry one here. It should probably be cleaned up, reopened, and this ticket marked a duplicate of that one, to focus discussion there.