Rain sound starts before first animation cycle is complete
When it starts to rain, the sound starts playing before the first raindrops hit the ground. Extremely minor issue, but fairly noticable nonetheless. It's especially easy to spot when changing cell from an interior to an exterior where it's raining. The opposite situation occurs when it stops raining, i.e. the sound stops playing before the animation is complete, but it's not as noticable.
(RM-2027 from redmine: created on 2014-10-17 by Alexander Bessman, )