Using /entitydata to change the rotation of item frames plays the rotation sound. This is really annoying, because it will spam the sound when you try to prevent players from rotating an item frame by setting the value of ItemRotation constantly to something.

What I expected to happen was...
That it would not play the sound

What actually happened was...
The sound was played.

Steps to Reproduce:
1. Place down a command block with this command: entitydata @e[type=ItemFrame,r=3] {ItemRotation:3}
2. Set the command block to Repeat, Unconditional and Always Active.
3. Place an item frame on the command block.
4. Place an item inside the item frame and notice it will spam the sound.

FIX: Use